HELP!

[EOC Bob]

In an attempt to cure my "hold open" problem on my 1921 DWM, I replaced the hold open latch spring. I noticed on reassembly that the front of the spring did not lay flat like the original but was tipped up a few degrees, the latch itself properly seated with the half curve seated under the pin. I had to tip up the end of the hold open latch to get the slide over the spring, and when I pulled the toggle back, it locked and will not return to battery even without the mag in place. Any ideas on a fix, or have I just committed the only Luger reassembly sin? Thanks Bob