"weak fuel" is to blame, must remember this one next time I loose a race!!!! but running 9inch length pipe can't possibly have any bearing on performance,the last guy who owned the boat ran it this way, so must be all good...!
Contact Ken through the KRE carbs thread. I bought a new carb for a nova 21 for $125 aud delivered to the UK.pound was quite strong against the Aussy dollar so worked out to be £65 or $80 USD. brand new!!