Well I decided to change the drop gears back, but managed to do it all whilst engine still in the car. Needed to lock of the the gears, measure up idler and shims, as I knew the idler fitted was a good fit when engine split just a simple case of measuring the one to be fitted and re shim as standard idler little thicker than striaght cut.
Anyway did a little vid of refitting, no sound and speeded up.
Edited by country clubman, 22 June 2019 - 08:25 AM.