1979 244 DL. Non-ABS. Replaced my master cylinder with the part from IPD. Went with the one that does not include a reservoir since I had a perfectly good one on the old MC. Swapped that over with no issues. When installing the new MC, I saw that the port on the driver's side was blocked off with a bolt. That bolt was up against the the sheet metal of the strut tower. Confirmed with IPD that this is the correct MC for this car - apparently there were a few different version used and they have all been merged into one design. Very little clearance is expected. The real issue comes after installation. I bench bled the MC and bled all of the brakes in the order recommended by the haynes manual until all of them had fresh fluid coming out. When I took it on the first test drive, it was pretty apparent that something was not right. While the pedal does not go all the way to the floor, it has much more travel than it used to and there is no braking force applied through most of it. At the very bottom, I can stop but the brakes are nowhere near as strong as they should be. The most likely problem seems to be air still in the system. What is the best way to test this/make sure it is out of there. I have seen a lot of people recommend using pressure bleeder. Is that worth investing in/do you think that would make a difference here?