I have an older Compadre with the 7 inch coil..I would like to be able to unhard wire it so that I can use a 4 inch coil in really trashy conditions, also a 9 inch coil.Question is..What number of pins will the add on coils take, and will the Compadre be able to drive a 9 by 8 coil? I have the 4 inch off a Golden, and a large coil from a Vaquero..One or the other will solve half the problem. Does Tesoro provide modifications like these on a pay basis? Figure if they do it, warranty will still be good???????? thanks for your help