Hey folks, finally got my Hard Rock from high school out and am planning on hitting some north GA trails! My rear cassette is shot though, teeth are badly worn. Suntour products are no longer available on my 7 gear cassette so I was wondering who makes a direct drop in casette or if I need to get a new freewheel too? I also have never replaced the chain so should I replce this as well? If there is a sticky, faq, or other useful link that I missed, please let me know. Thanks!