Does the Tula get stuck in the chamber if you try cycling it by hand?
If I cycle by hand it does and I have to hit the forward assist. Also if it's the first round in the mag. As long as it's not the first round it has no problem feeding. It's a PSA and will eat anything, just won't take the first bite if it's Tula, just have to "coax" it (forward assist) and it will run like a champ.