Hey team. My aircon sucks for two reasons. The cold isn't very cold, and the vent select is ratchet with a broken cog just like Cameron McPherson's was. it has been regassed and a new AC compressor installed, but my local mechanic is of the belief that I have a dodgy TX valve. A what? Can anyone shine a light on where the hell that is, how hard is it to replace, and the likelihood of that being my real issue? I can deal with the funky vent select, but I intend to visit Queensland soon, so I NEED AC. Thank you.