Man, this has me worried. I just bought a Gen4 G19 a couple of weeks ago. Now, granted, I'm not going to run off to return the thing. It has experienced some FTE's, as I posted in another thread...but only when my girlfriend was firing, and then it was almost every other shot...so I know it was her grip.
I was really looking forward to seeing the endurance test results. In some ways, it sucks that it's pretty clear this isn't the results you'll see from a Gen4 in general so it's hard to really gauge this as true performance.
On the other hand, I'm dying to know what's at the root of the issue...and if it happens to be the springs. First thing I did when I got my Glock was pop it and check the model number on the spring. And I can't even slightly blame Todd for not wanting to carry what has only proven to him to be an unreliable pistol.