Diagnosing no cold air today, and discovered that the high side Schrader valve leaks. I was reviewing https://www.g8board.com/forums/5-v8-engine-tech-l76-ls3/93745-about-c-performance-g8-2.html and see that the valve is indeed serviceable, so I'm going to order one up. I also injected fluorescent dye just in case there is more than one leak. I loaded up about 2 cans worth, and am seeing 35-40 on the low side and 160-170 on the high side with temps around 77 in fairly humid conditions. My quandry... the air isn't blowing as cold as I'd hoped (I didn't have a thermometer handy, so I don't have an actual temp). There was some pressure still in the system, so I didn't evacuate it before starting today (mistake?). Obviously I'm going to have to do so when I open it to replace the valve, so I'll cover that this week. Should I replace the dryer dessicant since I'll have the system open? Any other obvious thinks to look at for sub-optimal cooling?