24th-Jan-21, 10:21 AM
Grub screws are definitely the better option. When I returned to slot racing and first started club racing a few years ago I used to use the little blocks but they only allow one axle height and have a nasty habit of falling out occasionally. Grub screws allow more adjustment and they shouldn't fall out either.

![[+]](https://slotracer.online/community/images/bootbb/collapse_collapsed.png)