Trouble with upgraded iso-conv valve
It's not been too bad so far but I'm totally lost on the step where you upgrade the iso-conv valve. I removed the original, plastic one. It says to push the new valve in and out 20 times until it falls in. I did that and it seems to be fine.
The new valve is longer than the original valve and uses a larger spring. I've tried every which way. Even when I drop the new valve in without the spring, there isn't enough room to put the round piston and clip back in.
Any tips or ideas on what I'm doing wrong?
Edit where is this plastic piece? Pictures?


