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nates6969;
Are you serious? You pulled the pistons out of the block?! If you have, my advice is to pull the motor (if you haven't already) and bring it to a good shop to have all of the clearances checked. Have the cylinders honed (bored if necessary) and get new rings. How did you take the rings off? Did you removed the ridge from the top of th cylinders before you pulled the pistons?
As far as your compression problem, it isn't rings and it isn't your valves. If you're testing that low across all of the cylinders I would bet my reputation your valve timing is off. My guess is that when you replaced the water pump you didnt' put the timing belt and tensioner back together correctly. If the car was running ok initially after the water pump change, then probably the belt tensioner wasn't set up right, and later on it loosened and let the belt jump and throw your valve timing off.
Mark
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