So far, in the first 3 weeks with my TLE, I have put through 150 rounds of hand loaded 210 grain lead target loads, 150 rounds of Winchester XST JHP +P 230 grain and 100 rounds of Ultramax FMJ 230 grain. I have not had any problems at all. I also have two Wilson, 8 shot mags and an old Springfield 1911 7 shot mag. All work equally well in my TLE. When you get it, rack it a few times and note the tightness. Then, take it down and lube it per the instructions and oil provided. Once back together you should notice a big difference. Then, go out and shoot it. You will not be disappointed !!!
If you get stuck at the end of reassembly, get the slide pin in and seated. Then push the safety upward to allow that small pin near the safety to unseat. I know the safety can't go all the way up into it's locked position since the slide is open and over it, but raising it slightly should give you the clearance you need to make that little pin move. This is the secret to my new TLE.
Also, make sure of your sequence of re-assembly. On the TLE you can't put the guide rod assembly plug in till the last step.
Good luck. I'll look forward to a range report.