I had a lot of problems tightening the belts, I had 3 builds and on all of them, no matter what, the belt skipped on hard braking almost before dead stop.
I adjusted the belts so they have minimum play and since then I had no skipping or episodes of belts braking on me.
However, getting the perfect tightening adjustment was a trial and error, so you should do that once and you will know how to do it forever.
On the other hand I used the same play on my Evolve Bamboo GT and the aluminum pullies were worn out after only 1 day.
So, not all applications are the same, you will have to test, first just leave a fair belt play and go for a spin, adjust until it stops skipping, you’re done.