potto

Purchased a 79 Cota 359 as a Xmas present to myself ,missed out on a TL200 recently and stole the Monty off a guy that said it didn't run and parts were a mare....really. Had it running the same afternoon and found parts weren't an issue,motor has great compression and strong spark and runs well after not running for 15yrs . Following questions from a newbie ,please be patient with me lol ; bike won't start on decompressor ,is it set up wrong ?,think its opening too much? Without starts easily but hard on my old foot, plastic parts can they be sanded back to a better look, Will have other silly questions later but have a history with Spanish bikes so not too far off base. Cheers Dean.