The insulation was easy enough to cut with a box knife. Also making sure to cut part way through where the cover metal has the bends. Negative folds required removal of a small 'v' of the foam from back side, so that insulation would bend correctly without bunching up.
It sit quite well, but make sure it's in the right place before touching it to the surface or there will be a huge effort getting it unstuck. I tried that on purpose on the workshop door before I started the 'real' installation. There would still be some there now if I hadn't used turpentine to remove it!
A metre of insulation can do the entire inside, if you cut it right. I marked mine right, then cut the
last piece in the wrong place.
Don't know why! The result is that the rectangular piece closest to cab rear is now 3 pieces side by side.
Instead of buying more, I have left it that way, to remind me to be more careful in future. It'll drive me mad every time I see it, believe me.
More to come....