I have a PDQ lever and it does indeed interact with the port door causing some failures to lock back the bolt. Teal Blue Bravo - the PDQ manufacturer - recommends cutting off a coil from the bolt catch spring. But the real solution would be a redesign of the lever so it is lower in profile and closer to the receiver in the area where it would be under the port door and generally making the right side extended parts lighter/thinner. See the way this same thing is implemented in the HK416A5 vs the way PDQ does it. I have emailed with the manufacturer and he doesn't really want to do that in a future version of the PDQ. Too bad.
TOS picture of HK416A5 version here: https://www.ar15.com/archive/topic.h...&f=42&t=547320
