75 Spectra V-Drive

[WESTERNAERO]

Jerry, I hate to tell you this because you've got it all together. But, your bolts holding the drive to the flex plate should have a few threads showing. They're not fully engaged into the nylok area of the nut.
It's good to have 3 threads showing on everything that gets thru bolted with a nut and always use washers on the nut end.