A/C compressor makes noise

Ok, ran it for a bit this morning. Got a small leak by the low side port as the pressures were down from yesterday. 170psi on the high side and 26psi on the low side. Vent temp was 45 degrees. Ambient was about 82 degrees. See if I can upload the video of it running at idle. BTW, popping / snapping noise goes away at 1500 rpm and above. Everything seems to smooth out, including the pump belt.??? Can't upload video - "too large".