I also wondered if the fact that the head has been shaved .025, in conjunction with the block having been decked, had created enough extra slack in the chain to let this happen. But as Joe pointed out, this motor relies on the tensioner to keep the chain taught, and I think maybe that along with some slightly deflated lifters may be leaving enough slack that this can happen. I hope so anyway. I should have it all back together by Tuesday, so I should know soon.
[/b]
K this tensioner does not lend itself to the l.series fix but it can be helped with some work.