Earlier this year while updating to oil fed tensioners on a 73T I noticed that one of the small ball cages on the end was cocked and didn't look properly installed. I pressed on it with my thumb and it popped out along with the ball and spring with frighteningly little force! I replaced it with a different, new tensioner at my own expense since I had bought the upgrade kit it was a part of more than a year earlier (not from Pelican Parts) and there were no refunds after a year. I believe there has been a quality problem with these units; perhaps a little too much cost cutting somewhere!
Jim