My bucket is pretty close to being useless with a load on it. It goes up/down/rollback/dump all day long with no load, but when you load it up it doesn't want to lift. Also...when I let it down it doesn't come down until I hit the float detent on the joy stick. This 1997 L2900 has 1200 hrs. on it and I changed the hydraulic oil/filter last spring. I've used it quite a bit all summer long with no problem...any ideas out there?