HELP> I have an absolutely gorgeous 1966 pontiac catalina convertible covered in plastic in my snow bound garage. This summer the hydraulic mechanism that raises and lowers the convertible top developed a leak. My regular mechanic sent me to a specialist who replaced the left cylinder so the top would function. He gave the car back to me with top up. I lowered the top a short while after and noted the left side of the top, the side with the new cylinder, went down slower than the right side, the left side didn't go down quite all the way and then the top wouldn't go up at all. The switch under the dash seems to send power to the pump when you push it to the right to make top go down but there is only silence when you push it to the left. The car is lovely with the top down but i would like to make it whole again. Can anyone direct me to someone who can help? I have made calls and spoken to dozens of people without help. The car has only 53,000 miles on it and runs like new. Thanks.