Hi,
If it shoots low, try a heavier bullet ala a 230 grain, if you were shooting 185 or 200 grain stuff. That should move the impact point up for you.
I've not . . . you can always file the front sight a tad and cold blue.
I only have one Para. I bought it used recently because I always wanted to try the LDA trigger, since I've always shot my best pin matches with double action Smith revolvers, not 1911s.
It is a full-size 14.45 LDA Limited with Para's version of a Bomar rear target sight.
I got to shoot it recently (just standing and unsupported at 25 yards) but the results with cheap ammo were encouraging for the kind of accuracy potential this ol' slabside should produce.
Enjoy!
Tom
PS: Here's mine, and two 10-round 3" black targets shot standing, unsupported at 25 yards. Dang, don't ya hate those flyers that ruin a nice group?