ORIGINAL: Diesel Fan
ORIGINAL: Motorboy
Two alternative..
1. Make center hole in the compression screw to prevent the screw are rotating out.
2. Make a locknut with lever to hold the compression screw locked.
Or 3. You could copy the DDD setup with a tangental grub screw locking the comp screw.
<br type="_moz" />
Or 4. Make the entire comp screw from brass and it will expand when hot and grip to its position tighter than steel does.