Sounds like you did the right thing.  If it still comes out real bad you can file or broach a fine channel from the front bearing to the carb opening so the intake suction sucks the excess into the motor.  This is done on the casting.  Some manufacturers do this at the factory.  It can also be done with a small hole behind the bearing and into the carb opening.  If it is too big of a hole/gap it can affect the idle.  I have had to solder up the bearings on a Thunder Tiger .07 just to seal it better.  Kind of a pitiful machining job they did. I have made brass bushings for Baby Bees too because they wouldn't hold a setting after running little props for too many races.