hey everyone, i got myself a free 250 pit bike, but its got a catch its been in the weather behind some old guys shed since his son got sick of it everything was corroded but it still turned over i have pulled the carby apart and put it back tegether it has a couple nicked seals but its ok, and it was full of jelly stale fuel so it got a good clean, i rewired it to run without a battery or starter motor thanks to a thread on this site some where and now have spark i just need to know what may cause the over flow to leak when its screws done up tight? and also what a good sealant would be inplace of the small peices of seal that are missing? thanks in advance