hello ,my 04 turbo rx1 is in need of some idler wheels.the back wheels are the worse ones and they are rattling,this is what happens on high horse power sleds.i am looking at upgrading to better ones ,can you guys give me some advice and part numbers for them also.i hear lots about the skidoo wheels.this would be for all the wheels on my o4 rx1 with the proaction that i extended to a 144 .my sled still has the original wheels on her.thanks for any help,fern.