Hello all, I am new to RV and have a bus conversion P8M4905A that was converted to use an Allison V730. It has a shifter that is pneumatic controlled by wires from the driver' seat (up and down shift wires, indicator light wires). The pneumatic shifter has one piston working for downshifting which will take it from reverse to neutral to drive to 2 to 1, but the other air piston will not upshift it. I cannot get it apart as there are frozen bolts on both ends (my removal tool broke in them so I cannot drill into the removal tool - I have 7 out of 8 off on both ends). The sides come off and I cleaned it out. Does anyone know where to get this part? View attachment 381 Any help would be appreciated.