Delta/Kossel Belt adjustPlatform

I made this so i easy can tighten my belts on my delta printer.
I have used 3x20mm screws that are screwed in the top frame. (i just drilled 2.5mm holes in the corner frame)
The adjust platform is resting on the top of the 40x40mm aluminium profile.
Since the profile i at rest and the top platform i loose, the belts will be tighten.