after I was happy my wheel was aligned & belt was correct tension I painted little white lines on both the swinging arm & the adjusters - know when I readjust I'll have to get them off & repaint, but can't see having to adjust belt for a long time. I also used the tension guage & belt passed the 90 degree twist test too.

Remember to get all the slack in the bottom side of the belt by putting it in gear & rolling backwards. Then check for the 90* twist. If you are working so hard to twist it, it's either too tight or you are too weak to ride. ( I am leaning toward the "It's too tight" position, cuz I dont want you coming to my house & grabbing me by the throat to show me you arent too weak to ride..  )