taking bearings out

hey i just got the RS bearings and i put them in, and they werent so fanfrikintastic, but anyways, i was taking them out and they were pretty hard to push out of there and i was wondering i know that your supposed to clean those suckers every once in a while and i was thinkin there pretty hard to get out and i dont thing that would be healthy for them to put that kind of force on those bearings and also there is alot of tear down takin those things out (all 14 of them). so anyway i was just wondering if people take all of the bearings out to clean them because that is a pain in the jibralter. also when you clean them, do you keep cleaning them with brake cleaner each time you clean them or something elso. and by the way, i did search for this but i couldnt find something that answered all my questions. mother johanson.