[Tenrocca]

Couple of things.....

Rage gold filler and KandH ultrafine gold as a good skimmer. AFS sanders - you can glue the paper on with spray adhesive (bostick one comes away easy enough) if you cant find self adhesive paper. I used Upol reface as a spray polyester and it is really nice and I actually liked the smell when sanded. Get a decent vapour mask when using fillers and resin - No smell makes it a lot more pleasant.

Panel gaps - lot of people glue paper to a thin piece of timber - I found this hard to use around curves so found a 3-4mm strip of rubber with paper glued both sides worked well.

Also if you really stuggling to get a planel flat when sanding back the filler (bonnet for me) spray a coat of polyester primer\surfacer. When the sandpaper cuts through the filler quicker then the surrounding gel coat it can make it tough, but an even coat of surfacer will help get it flat.

If you trying to get panel edges to line up, skim the whole area with filler, and when it starts to go off cut out the gap with a razor blade.

Cheers