Make sure your 85 load rite will handle the wider bearing area before you buy the rollers, mine is an 84 and it would only take the narrow bearing area rollers. Here is a link to a post I did when I replaced my rollers.
http://wellcraftv20.com/community/showthread.php?t=4764
My advise would be not to go cheap since you dont want to do this again any time soon. An extra $50 now could save you a lot of trouble and time later.
Turbo