Part Deaux: (optional)
Now that you've got the plunger worked over it's time to do the rest. Turn the slide over and with the muzzle end facing right, find the part in the top that moves up/down.YOu need to start by giving this a through cleaning. Use a bonze brush and #9 and really scrub it down well. If you work it with your fingernail, it should move 100% free with no hesitation. (If you wondered why a Hi Power cost several hundred dollars more than the clone, this is why,,,it's all in the critical thousands and ten thousands of inches). .If it feels gritty GREASE it. If it feels smooth OIL it. The grease will hold on to the tiny bits of abrasive dirt and help work out any roughness as you shoot it to break it in. The oil will just act as a normal lube.
Now back to the frame. With the magazine removed, work the trigger. If it feels smooth, use a drop of oil on the area around the little plunger that works the above trigger group in the slide. (the little guy popping up and down.) If there's any gritty feel grease it for the same reason as above.
Remember through the whole process, you don't want to remove any metal, just polish the surfaces so go easy with the coarser grit wet/dry and don't overdo shooting it with the grease on the mating surfaces. 100 to 300 rounds of live shooting with the grease in place IMO should be max. Ammo that "shoots dirty" in your gun would cut that figure by 1/2. I used 115 gr PMC in my HP and it took less than 100 rounds.
While you've got it out to work on it,,,take your .22/45 Ruger out and lay it on top of the FEG. The .22/45 is supposed to be a duplicate of the 1911, but it's actually closer in dimension to the HP. See my friend, you were **doomed** to get an HP or a clone the second you got the .22/45