So I got to working on my Team Losi Racing 22-4 today and modified my belt cover system so it is truly modular and any of them can come off without removing another. I wanted to be able to get the side belt/spur cover off without pretty much disassembling the entire car, so here's what I came up with. Once you have all three belt covers off (sort of a project, but not too bad) check out the photos.

Photo 1: Cut the keyed portion of the side belt cover flush with the step down edge. This piece holds the spur shaft bearing in place, so don't mess it up! Then with some CA (or any glue, you have to work fast if you use CA) put a dab on the part you just cut off and place it in the front belt cover where it would normally sit over the bearing and put the cover in place so everything lines up. Let it dry for a minute or two. Test fit the side belt cover with the front cover on. It should snap right into place and there should be no gap where you just cut if you lined it up perfectly.

Photo 2: Now you need to cut the tabbed portion off that sits under the corner of the rear belt cover. This is tricky, I used our band saw and it worked pretty well for me and left a pretty clean cut. Only needed to sand a little to clean it up. Then just take that cut piece and press it (or glue if you're afraid of losing it) into the rear belt cover corner. Now you can put all the screws holding the front and rear covers back in and you're left with Photo 3.

Photo 3: Pretty self-explanatory, but I am now able to remove the side belt cover a lot easier. The servo can come out with it very easily all as one unit. I'm happy with the way it turned out and it didn't take me very long to do it.