I just had my ac compressor rebuilt and the ac was cold or a couple weeks then stopped blower cold air. I checked my pressure and sure enough there is a leak. I took my lude to brake max to get my ac system checked. The claim the compressor is fine but i have leak coming for my low pressure service port. How common is that? I recharged it again with dye and i saw nothin of the sort coming out. It seems that would be an easy visual spot. I think there scaming me. Any ideas.