I seldom adjust the down speed of the 3PH lift mechanism. I recently discovered that the control is stuck in one position. I have tried lubricant, push/pull knob, and looked for some method of adjust, but no luck. Also, this was the first time I tried to adjust it since having the front cover of the transmission replaced; may have been a problem with the re-assembly. Any ideas how to remedy? /forums/images/graemlins/confused.gif