Anyone used Progression Ignition?

After reading this post I decided to order myself a Progression distributor, I have been running a Pertronix which has helped in reliability but the lack of being able to dial in my mechanical advance is the limiting factor to this distributor. I took it apart and welded the weights to limit advance to 12 degrees but now I can't get it to idle below 1k due to my 22 degree base timing. Looking forward to learning how a fully custom timing curve can improve the overall driveability and performance of my small block.