Hi,
looking for carb help, I have 38 carbs with 330 mains .last winter seemed to work fine now it bogs out after half throttle . if I take the airbox off it revs as it should ? confused any help out there ? I did raise the mains step by by step up to 370... each time I put the airbox back on it bogs out ? ....the air box appears to be clean with nothing blocking it but I will confirm that tonight .
Any help would be great.`
Thank you