Welcome Pete- As a new P38 owner myself I can tell you-- the members on this forum are willing to help with any problem/issue/question you ask about-- and are gracious when they do.
I also finally bought a P38-- only because I found a shabby Holland and Holland and could not restrain myself. It has been a few months of replacing and fixing bits but it will soon be on the road full time- thanks to the help I have received from forum members.
If you need/wish to refinish your wood yourself I can give you a few tips on how I refinished mine. My wood was very bad which was the only reason I chose to do it. If yours has the slight yellowed top coat cracking you may not feel the need. Mine now looks great and aside from your time it only cost me about $40 total- rather than the $3000 I was quoted from a classic car wood trim refinisher in the US. They even hinted that they may not even wish to attempt it after examining the pieces.