What exactly is involved in a RB modded carb?
If you want bottom end and a modded carb I have my oval bored 36 x 39mm AS2 carb i'd happily swap for a 38mm?
Finally got the jetting in my bike close to perfect using Jakes 38mm carb and I'm really happy with the power. Not looking forward to going back and re-jetting my oval bore when Jake wants his 38mm back.