I need to replace a transistor on my Rottendog Power Supply board (Q42), the physical part I removed says FQP13N10L, though when I went to Rottendog's website and looked at the schematic it stated it was a 20N10L. Which do I use? the 13A or 20A? When I looked this up on Marco http://www.marcospecialties.com/pinball-parts/FQP13N10L, it says not for use with Rottendog Power Drive Board. Just want to make sure I buy the correct part. Any help would be greatly appreciated.