I have a 1990 F150 with the R12 to R134 conversion. I replaced every component and both hoses, and now I have a completely brand new A/C system. The problem is the pressure numbers are way off!! My low side is low and my high side is way too high. I’ve read quite a bit and all the information points to a clogged orifice tube. Like I said, EVERYTHING is brand new, including the orifice tube. Any other ideas?? Thanks!