My belt deflection is 20mm in centre The belt runs true My current box, the 3rd both previous had oil seal failures, has got quieter in 4500 miles, the car has done 9800 overall. Chris if you are adding a comments column change mine to quiet then in the comments noisier after 1 hour running. I have driven 3 other three wheelers and mine is the quietest, the 2012 red factory demonstrator was by far the worst.
