I think it's one of those problems you don't have until you go to check **** oil one day and there's about 3 times as much as when you left!
My seal has gone hard, and doesn't seem to want to stay in place. A bit of silicone would probably do it, but there's a bearing manufacturer here who thinks he has one. If I get hold of some I'll shout here on the boards. It seems top be an odd size at 9.5*1.6*4

Chris