can you put the idler on the other side???? it would also help with the pull of the belt by the rotation of the crank---would help garud against the socalled ratcheting which leads to premature belt failure----and if you could put idler on outside forcing belt inwards would help with the WRAP with more teeth in contact-------

and from an old time fuel dragster/funnycar guy-----we always put the big pulley on the bottom!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!