That's all good advice.If you don't have a friend with a lathe,find one and make him your friend-and ply him with booze.
My first KTM ('99)had spacers made of cheese(as they did for years afterwards)The seal would groove them in a couple rides and dirt/water would eat the bearings.
My buddy with a lathe machined them down and pressed a thin stainless sleeve over where the seal sat.(this was before hardened spacers were available aftermarket)That was the end of the problem and they're still going strong.Total investment-a flat of Moosehead-most of which I drank myself while taking it all in.