The buttons on the Left stalk are for various indications by your speedometer. The buttons on the steering wheel are either cruise control or radio functions.

I had that on my Disco, the whole filler tube would come out when trying to remove the cap. The threads between the cap and tube were very tight. I used some valve grinding compound to work the threads back in. If you do this, make sure you get every bit of compound out before reinstalling it.

Personally I'd keep using it and check the oil levely more often than you would otherwise.

Marty, how difficult is it to fit the Viair? It looks like a good upgrade. Is the original pump wiring heavy enough without mod's?

Yeah, I think I needed to remove the whole RH side trim to access it.

David, I tied a stout string to the fuel cap release rod and have it tucked under the interior access panel. The only reason I've done this is the fuel door switch was the very first thing to fail on mine after taking possession of it.

Is your RPM indication okay? I have a bit of a hard time believing it will actually continue to run at 100 RPM.

On my '97 you only push each button once. Eg, if your code is 1234, press the 1 then the 2 then the 3 then the 4. Then the radio becomes live.

I agree about Rock Auto. For shipping to Canada they're the only company I've found that has it figured out. With every other foreign seller (not just auto parts), I always get dinged fairly exorbitant charges from the courier service for "brokerage" fees when the parts arrive. Never with Rock Auto. They must have some agreement with the couriers.
There are quite a few parts that I do have to get directly from England though. I've had great service from the English companies, but they haven't got the shipping to Canada figured out.

I tried the eBay 3D printed rebuild kit and wouldn't recommend it. Some people have been successful spending hours filing the plastic to make it fit. I filed for some time and decided no amount of filing could ever make mine fit.

My Nano works on both my GEMS P38, and the Disco 2, with the same cable. I think the P38 cable works for both, but the Disco cable doesn't work on the P38. IIRC the P38 cable costs a bit more.

I did this to mine shortly after I got it (almost 3 years ago). It was cranking slowly, battery and alternator tested fine, I had cleaned all the connections, including grounds. In the car records, the previous owners had been replacing batteries about every two years. It's still cranking over well (same battery) and I don't keep a trickle charge on it, and it sometimes sits for 5 or 6 days. It's a cheap mod and seems to work well.

Got back to it today. Timing Cover off, and it looks pretty clear that there was a good leak from the RH coolant gallery. It looks like someone previously tried to repair the same leak using the old gasket and a bunch of silicone. Nice to find something fairly definitive, as the Head Gaskets looked perfect.

I don't remember how your noise started. I had a Scout a few decades back that had a lifter that would intermittently starve for oil, collapsing and giving the engine quite a knocking sound.

Sorry guys, I like to think that I'm a reasonably good mechanic, but I'm definitely not great on computers. I'm pretty sure that the coolant wasn't getting past the head gaskets, but I'm fairly hopeless at getting photos attached.
I haven't had time over the last 2 weeks to continue to tackle this project, other than making a tool to hold the crank pully to remove it. When I get back to it I hope to find evidence of the leak under the timing cover.
Thanks for all your replies so far.

Photo of gasket

No, nothing external, it seems it all ended up in the oil.

Disc brakes dry off really quickly. After going through water with the 2A I keep a foot lightly on the brake pedal until the drums dry out. Otherwise you get horrible differential braking when you need to brake hard.

I agree, the brakes work fine, except after going through water.

I suspect they drive about the same, other than no synchro in 1st or 2nd. Otherwise they added a bit of plastic to make them look a bit more modern. Very good off road, not very good on road. I was actually very surprised at how good the P38 and Disco were off road. I always thought that LR sacrificed a lot of off road capability for the more road worthy models. Not the case at all. There are a few places where the short wheel base of the 88" will outdo the newer ones, but in general, they are as good, and sometimes better, especially where Traction Control comes to play.