So I was having a problem getting car into gear, if I pumped the clutch it would go, so I assumed Master or Slave cylinder.

I ended up replacing both. I then adjusted clutch pedal and bled system (going through like 2 quarts of brake fluid). The clutch "feels" great - it has good pressure, returns good, etc... but it will not go into gear still. The internet says this is usually a symptom of bleeding but when bleeding I'm really not seeing any bubbles come out anymore. Now even when pumping I can't get into gear (I can change gears fine if car is off). Is there anything else I should look for?

 

It does sound like air. I would also verify clutch pedal has some free play. Verify slave cylinder movement when clutch is pressed. Check for air leaks. Aftermarket?

 

I set the clutch pedal adjustment so the pin can basically go in without moving the pedal at all, not exactly sure how to measure free play here, but clutch feels great

Slave definitely moves after pressed, I see it moving the fork

Yes, both slave and master are aftermarket non-OEM parts