hey so i just got a bunch of parts including a new crank. my old crank was really bad so i got primo powerbites. i got a new bb and it came witha spindle and all that stuff. i was wondering if someone could give me a detailed description on how to properly take out the old spindle/bb and put the new one. it is a mid bb if that helps. i wana do it myself cause the bikeshop will probaly charge me like $50 (corect me if im wrong .) thanks so much if you can help me because i need it fixed for this weekend! also sorry if there is already 1562430 on how to do this but i couldnt finde any. thanks agian.