The motor in question is a iron headed TSM legal 109. I'm currentally using AC R42ts plugs. At 26+ psi I think it is tring to blow out the plugs. I don't mean out of the head but putting out the fire. What other choices of plugs are their? Is their a better plug I could use? I currentally use the type 1 module with 45000 volt type 2 coils.