Nice find :)
I can confirm that they both work on midweights ..
As for Heavies (tested vs. Rachel) here's the best modifier I found:
3P > 64P > K, H+K > 3PKK2K = 85
As for Alpha-152:
3P > 64P > K, H+K > 3PP4P > P2P2K = 93 (max I could find)
3P > 64P > K, H+K > 9KK > PKK = 92
3P > 64P > K, H+K...