I have my own A/C tools to do the vacuum check, my thoughts exactly was prior to tearing it all apart was replacing all the seals, having the lines remade and trying it again I have removed most of the lines in the engine bay and the seals were dried out [I couldn't get to the fire wall ones Easley so those are for later]. I also have to find a dryer or have my original one repacked, long ago I thought I saw something about a company that could cut open the dryer and replace the dessicant and seal it up [weld?] again.