been using the later ones (bike's a 79), both the stock and another a friend found in his collection of parts. i'll check to see if the nub is there, i think the decompressor would help a lot.
yeah, if i don't jump on it it'll just bounce right back (even if it's not kicking back), i'll see if i can get my hands on an older kicker, and maybe a spare shaft to square off for a harley kicker, which i could probably get for free....