Lancer Tactical + Socom Gear Troy 190rd Mags Feed issue (Resolved)

[Spadona]

Gun: Lancer Tactical Mk18 CQBR.
Mag: Socom Gear TROY M4/M16 190R Magazine
BB: King Arms Platinum series, .20g.

Issue: This magazine comes in a box of 5. Of the 3 I've tested, two have minor feeding issues, while one has severe feeding issues. Other mags (a no-name flash mag & the hicap that came with the gun) feed without issues.

The minor issue is that every 4-5th shot does not fire a BB. In other words, my gearbox would turn but it'd fire a blank.
The severe issue is that it fires one BB, then it'll refuse to feed anymore.

I've attempted to hold the mag up and press it into the gun, but with minimal success. On the severe issue, it'd only feed (sometimes) when I wiggle the mag around until I hear the BBs move inside.

Do you think it's a mag catch issue? Any advice would be greatly appreciated.

EDIT: The issue has been resolved by GBBR after he took a look at my rifle.
The issue stemmed from the hop up, as the little cylinder that connects with the mag is short by a few millimeters. After replacing the cylinder, the mag fed nicely. Thanks again GBBR!