Ok, here is the new system, you can change the purchase really easily by moving the red line from terminating on the boom to terminating at the bottom block on the bottom of the system. we call the min purchase 9:1 anf the max purchase 12:1 but I am sure you all will find 500 other ways to calc it out <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />