turntable not turning

Was sent the wrong part but wanted a pizza so I installed it anyway and now the turntable turns a 6 rpm instead of 3 rpm. I figured that the part I ordered was no longer available and that was the best you could do for a replacement part. Replacement was easy- removed panel from bottom of microwave and filed the sharp edges from the side cutters, remove the one motor screw and motor. swapped the plug over and installed the new part. Replaced bottom panel, plugged in and cooked a pizza.