I don't believe that later model Halo of Heat dryers had any front support rollers or glides. If they did they're not illustrated in any of the parts manuals I have. The entire weight of the drum was supported by the bushings surrounding the long spindle at the rear of the spider. But regardles of the layout, when it comes to loud screeching noises the cause is always easy to find once you get the machine apart far enough to see what's going on. In this case that likely means just the back panel needs to come off. If it turns out that the noise is coming from the blower housing as was suggested above, it comes apart pretty easily. It may be that something got in there that doesn't belong and simply removing it will solve your problem. Cross your fingers.
If you get a repair guy out to your place that tells you the machine can't be fixed, and he can't give you a sound logical reason why, he's either not interested in doing the repair, or he's not familiar with Halo of Heat machines and has no clue where to begin. In either case, find someone else. There are people that've been working in appliance repair for a long time that would enjoy an opportunity to work on an old timer like yours. Parts may be an issue, but even that can be overcome with a bit of searching around and help from the board. Have the repaiman give you a list of what's needed and go from there. With any luck you'll have it up and running again soon.
