Daaamn, I love a parma box. I have my complaints though. Well only one really, it's expensive haha. but if i'm ever gonna do something nice and proper i use a parma box, cuz they're so universally excellent. I've never heard anyone say otherwise til today.
Anyhow, I did wind up going keyless last time I had one, but that was on a AV10 setup. I put one on my flandria cobra/ktm 50 thing and it was just like plug and go, kept the right timing, added bonus retard. they started so easy too
I dunno, can't help with your trouble much tho