Brent, I have one of them mecs, they make a universal charge bar that lets you adjust the amount of charge and shot which is what I have in mine cost was like 30.00 way way back.
http://www.google.com/products/catal...d=0CF0Q8wIwBA#
You can get a real good progressive for 268 this is how I would go, the mec jr is a PIA. To do high volumn go wit ha progressive, you will like it a lot.