[B44&501xRacerEX]

I use the tensioners, just have them not touching the belt.
If you have them touching the belt it causes binding. so when
you mount them in the car have them mounted so you can stick
a small piece of paper or cardboard through the pulley.
But dont have them touching the belt unless you want binding.
The tensioners are there for a reason, but I only use 2 instead of three.
All the tensioner does is keep the belt in the pulley.
You dont have to use them because the belts after a break-in period(maybe 2 battery runs)
are very smooth.