Inherited a 1979 XS650 Bobber build which is in progress. It has a Harley peanut tank on it with all the vacuum hoses blocked. No gas/carb problems with the old air box attached but when it was removed and cones were installed first the left carb started spewing gas then the right. I have rebuilt several Keihin CV 40's but never fooled with Mukuni's. Have checked out the Tech. section on this site and have no problem with taking these carb's off and apart but I sort of live by the KISS principle. So, I was wondering if anyone else has experience with this or a similar problem and has a fix/suggestion before I go exploring?