for the hyfax wear i went here
http://pioneerperformance.net/ and ordered the wheel spacer kit part # P-S124 and put in on in about 1/2 hour. the kit lowers the stock idler wheels 2mm that basicly eliminated all the hyfax wear i had; 3 sets in 1600 miles. i like this set up because it uses the stock size idler wheels instead of oversized polaris, kimpex or ski doo wheels. i also have the SLP anti wear pads on and after 400 miles now with this set up i have had no visible hyfax wear.
the wheel spacer kit at pioneer perfromance web site is under the "rear suspension" tab on the left, then scroll about halfway down. i then called them at 716-496-8800 and ordered the kit and it was on my door about 5 days later.