No problem. Let us know what you come up with. The only way a tensioner could slip out of place is if the retaining bolt was no properly torqued. The reason you have to replace it is because they can seize, just like the water pump, causing the belt to snap. What kind of distributor cap did you use (some of the cheaper caps can have internal shorts even when new)? The ignition control module, located in the distributor, can also cause a misfire. Keep that in mind.