I purchased a 741 bobbed bike awhile ago. It was said to have been bored out to 37". When I ride it on the highway I'm lucky if I get up to 60 mph. Is this a normal max speed for this bike set up? Also if I ride to long at that max speed I get alot of oil comming out of the distributor and the back of the oil pump. It is like the breather can't keep up. I took the pump off and blew out the breather holes and replaced the oil pump gasket, because they had the wrong style on it, but didn't seem to help. For riding around town it isn't a problem or when no body else is on the highway and I can take my time and enjoy myself. But when there is traffic on the highway and I try to not make so many other people made, by driving to slow, I have the problems.