I’m looking for some tips on replacing my headlining material. Over the years I’ve replaced 4 but still never mastered the technique in the dips. I have always used foam backed material from AS-trim. The areas I just can’t master is in the grab handles and around the sun visors. I’ve even tried cutting the material by the rear lights etc to alow more stretch in the dips. Although they always look good I’ve never managed to get that factory look. Any experts out there with some advise?