well first off the trickest cam tention is made by tokyo mods. about 80 bucks. will help ya from blowing a motor. thats how mine blew. 6k+ hard street miles is damm good if ya sk me. the motor was built by ron hamp who is a crf450 god. check him out he is on thumper talk. as far as polishing the frame. go to the hardware store and get some 500, 800, 1000, 2000, and plus wet sandpaper. the frame is bare so there is no coating on it. take the shrouds and tank off and get to work with a bucket of soapy water. each grit is about a hour od sanding. i went to 12k grit. yeagh ya heard me correct. it is actually called micromesh and can be found on ebay. it is used to polish aircraft plexiglass windows. anyway 2k is more than enough. when you are done give it a good polish with some mothers and a rag and you are good to go. once you do it you will understand. the finder grit you sand wioth the less up keep you will have. i did do the swingarm but it has a coating and it is a mother trucker to get off. not worth the time in my book. now that my motor is blown and the fram is getting converted to accept the cr500 enging i am getting the frame subframe and swingarm powdercoated black. good luck and if you have any questions feel free to ask. aloha