No, I'm not using a torque wrench, but I'm tightening the 5mm hex bolts really tight. So tight that I'm afraid I might snap one off...What a poor design to use only (3), 5mm bolts to hold such a torsional load. It's walking off opposite of engine. Its walking off idler, tensioner, crank, and water pump as well. Could one of the cam sprockets be bent ? They are mounted to the camshaft correctly. Wish I had a magnetic base dial indicator to check the run out on the cam sprockets. I faught this all afternoon and know if I go with it as it is, will only shorten the life of the belt....Scratching my head on this. Would the belt tension be too tight ? The indicator points are aligned with each other. Too loose and I'm afraid the belt will jump a cog.