Benotto Pista

is your bottom bracket italian thread ? if so it should be 70mm wide

the code on the axle says: (68)=BSA-(p)=pista-(120)rear spaceing

if i am guessing right you might run a campa bsa pista axle in italian BB shells, this could be the cause of the missing 2mm on your crank-frame clearence.

the axle code for italian thread shoud say "70-p-120"

just a guess, it might be wrong as well

Hmm, sounds like a plausible explanation. Will look into that!
I've been lacking the Benotto project ever since the birth of our baby boy. Was able to paste a nice Campagnolo decal on the pram though :)