My 340 in my 66 developed issues :-(

That is a dial back. I'm not familiar with using those. I have always depended on a balancer with the 0-70 degrees on it and used a old style timing light. It's just what I'm use to. 32 total doesn't sound like to much. on my 69 360 Dart I run 18 initial and 38 total without detonating.