02 Honda Civic 1.7 timing belt tensioner

I've changed my timing belt twice before in this Honda 2002 Civic 1.7. I never had a problem before. With close to 300K miles, the water pump went out. This time, I bought a water pump, timing belt, tensioner kit and changed all 3 out. The next day, after driving 25 miles the car dies. Towed home, car would start for 5 secs. then die. Found the cam gear had advanced 1 tooth. I realigned it, and tightened the tensioner, thinking I left it too loose. Drive the next day 150 miles and come home. Next day, driving out of the driveway, car dies 1/2 mile away. Tow it home and find the cam gear jumped forward 2 teeth and barely runs. I found that I could push the tensioner against the spring and the belt is loose enough to pop off of the gear. I'm thinking "if the bolt is tight, why is the tensioner loose?" I found that you have to rotate the lower lock plate down towards the tensioner stop before tightening the tensioner bolt or else the belt can jump teeth when decelerating. The new tensioner had a clip that held the lock plate towards the stop, but I removed it before I installed the tensioner. Keeping this "clip" in should keep this from happening to you. Mine rotated so far counterclockwise that it allowed the belt to stay loose. If you look at the tensioner, there is a plate pulled by the spring and a plate that rotates. You rotate the arm on that plate against the "flat part" of the spring loaded plate. The clip holds this in the locked position. To check if this is correct, after installing a new belt and tightening down the tensioner bolt, push against the arm that the spring is pulling on. If it moves towards the loose side, you have to loosen the bolt, rotate the plate against the flat stop, then tighten it back up. Hope this helps save you some money. I had to dig into this to find out why this engine suddenly kept jumping timing belt teeth, not knowing that the clip was so important.