took it out in the snow here in Montana it has a old Wisconsin 4 cylinder runs fine. the lift and bucket work fine. having a erratic control issue . some times it will turn too the left little jerky then move the stick back then forward then it will grab like its slipping all fluid level good just the drive just doesn't feel consistent.maybe having pump problem? is there a a drive pump and a separate one for the lift/bucket? are there any web sites that can give me a break down.