I changed the Mosfet PCB to a three layer board and I got quotes to have it manufactured. The price was really high, more than $120 per board. I went back to the drawing board and redesigned the 2 layer board to make it stronger with 3oz of copper (took me 2 days). I would just like to know how many of you guys will be interested in this board? The more I buy, the less expensive they get.