Check out this post : X-Carve mod pack 1 - #8 by Mike
One of the things he did was replace the pulley set screws with socket head cap screws which makes the tightening MUCH easier. As soon as I saw this mod I ordered the screws I needed and replaced mine right away. It was one of the cheapest and easiest mods I did, and it’s saved me from the bad language trying to tighten them every time they come loose and worrying I’ll strip out the default set screw…