PM Stabilizor Kit Motor Pinion. The Stabilizor Kit from PM out of Olde England replaces the rubber silencers pressed into the motor with metal PTFEbearings. The PM Kit creates a tight connection between motor and pinion which reduces movement to a minimum. In turn, the rigidity of this connection can create other problems; panel screws can loosen and fall out or small tears in the panel linings can occur. A remedy for this would be to use a rubber washer under the panel lining to ensure tension free assembly.