The carbs are easy to get off and you won't f**k the rubbers up, he's a tit. the fuel actually drains out of the over flow I think you will find and not into the sump/oil, if you start the bike run it for 5 mins then turn it off and watch the ends of the rubber hoses that come off of the carbs, there are X4 from each float bowl and 2 from the pass through fuel line, the 4 are the ones that really matter as they are the ones that leak the most, if they are leaking then all you need is a set of new float valves and seats, if it,s running from the 2 fuel lines between 1/2 & 3/4 then that is why it's running rough, it will drain the carbs on the right (looking from the rear) hope that helps?