However, the long arm adjustment bolt hole was "wallered out". So instead of tapping for a bigger bolt, I put my old alternator back on and it runs great.

How about putting a heli-coil in it?

74 Challenger, bought it new. In 1978 I replaced the original 318 with a 446 and 727. Mild cam, Jardine headers, and Holley Sniper EFI.
New engine! 511" RB, Edelbrock Performer RPM heads, Eagle rotating assy, Comp hyd roller cam, Doug's 2" headers.