I have had endless problems with my top. (all hydraulic cylinders rebuilt..thanks Dennis)(rebuilt controller) and now the top stops when going halfway up. My mechanic says I need part #'s 129 800 0774 and 129 800 0874 for $1000. If you know what these are and do please help! Everything WAS working except the cylinders were leaking. Do I need these replaced or does he not know what he is doing? Where can I get them rebuilt or fixed or replaced on the cheap? Any help would be GREATLY appreciated.