Replacement vacuum advance can for 318 distributor

You don't need to convince me that I need vacuum advance, why else would I post this thread? I just mean that it would be drivable until my new can arrives in the mail. This is not a drag car, I regularly depend on it to drive to work.

If I understand you correctly, if I cut those little limiter tabs off each side of the arm, the only thing limiting how much advance it can pull is how far the diaphragm is capable of collapsing?

My can is indeed hooked up to ported vac, so little to no effect on idle.

Would you happen to have a picture of how you modded the distributor for easy disassembly?