There may be different problems with any gun - design flaws, bad or low quality parts, bad fitting or bad finish, breakage.
With replaceable parts and fitting issues, it's often not worth getting it fixed under warranty as you waist tons of time and sometimes money too. Cannot do much about finish or design problems thou.
Para got popular when people discovered it came out with double stack mags and it was great advantage in IPSC/USPSA, and those same people would either tune the guns or get them tuned anyway before hitting the range. They wouldn't worry too much about finish either as guns see lots of use, wear and abuse too.
Knowing Para has a few models with issues, it's a good idea to avoid those guns based on model, year of production and finish.
I had one - 1640 Limited, it was finished in polished stainless and made in Canada - had no issues and sold it due to not using it, fired 250rds to test and sight in and it worked just fine, zero problems.
My $0.02 - research the gun and model well before you spend your money. If you already have one and it has developed issues - see if it can be fixed locally and for how much - may be well worth it.