what method did you use to get your pushrod length? I've used the half lift method with good results. I would have expected the pushrod to be more in the middle of the hole vs outer wall. I had to buy the 2.3inch rocker studs to get the correct geometry with 1.8 installed height. I also noticed on mine I had to move the push rod plates around to center them the best I could.
Rocker Geometry
https://youtu.be/o5is9BsH5OU