I was looking at the high subcooling, reasonable superheat and thought i might have a bit of a high charge (I thought there might be some backup into the condenser) but not too high. So I took a bit out, and i didn't have a scale but it was a couple of seconds on vapour side. Now my SC goes as high as 30 deg and SH is down to around 4 deg. The rest of the above conditions are roughly the same.

Could I be looking at a liquid line restriction?