Thank you Silverthorn for starting this thread and Coldsmoke308, Styrak and for everyone else for your input.
I was having the exact same problem as Silverthorn and it wore out my stock TM abs slide since the locking lever would only come up a little bit.
I had a broken Magpul AEG EMAG lying around so I took out the spring and cut it longer than my TM Mag Spring and it locked every-now-and-then.
Still unhappy with the results I figure out how the mechanism of the locking lever works so I took it a step further and cut a mm off the bottom part of the mag lip and it works like a charm now.
Thank you guys. :O)