I have very little expereince but I do remember reading that there is supposed to be hump in the ramp to nudge the nose of the bullet up. I think I read this on a post about polishing the ramp? Just FYIJust an FYI . Went to local gunshow today to just browse around. Ended up buying FS tactical II .45. But while looking I came across a few 10mm versions. And they were absolutely horrible. Horrible in the fitting specifically. Slide to frame fit back by the hammer was not smooth at all. And the worst were the barrels. I don't know the actual name for the part but the cut on the back of the barrel that leads to the hood looked like stairs. I mean literally the cut went up half way and then it looked like someone adjusted back a couple of millimeters and finished it. I could stick a quarter in the gap.
I came across numerous different ones from different people that were cut this way. One of them at least had the decency to mark the price down on it.
I literally went through about 4 different sellers till I found a .45 version that was fitted well. So it was not just one guy trying to shakedown noobs.
Now it may just be that since they sell so quickly only the crappy ones were left. But if had bought one online and that is what showed up I would be pissed.