Not to wish any bad luck on anyone....
I did something I KNEW I shouldn't do, but did it anyway. Bought a Para Elite Hunter long slide. (Remington had just acquired Para some time before) It was very tight when I got it. In around 450 rounds it was more loose than any 1911 I've owned. It rattled when you shook it, a lot. It was also the most inaccurate semi auto pistol I've ever owned. Did lots to it to try to make it shoot better, didn't help. (trigger job, tight custom sized bushing, even threw an old "Dwyer group gripper" in it in final desperation). Every round fired through it was in load development trying to get it too shoot worth a damn. No joy.
IIRC I paid $1200 for it (very stupid, but wanted to get one before they got worse, figuring Remington's effect on Para's already crappy reputation would only make it worse. The news Remington bought them spiked the prices) Sold it with full disclosure for $625
"The pretty turd."
I built a long slide 10mm Glock. Never did fire it. Bought a stripped frame and an aftermarket slide and barrel. Filled it with "higher end" aftermarket parts, Ti striker & saftey plunger, match trigger, Kensight adjustable rear, fiber optic front. Went to try it and something or another was wrong. Took it home and decided that try as I might, I just didn't like the large Glock frame and the smart thing to do would be to part it out and sell the parts as new, rather than shooting it a little, decided I still didn't like it, then trying to sell used parts.
So I did, took it apart and as my luck would have it, THE VERY DAY I listed the slide and barrel for sale was the day Glock announced they were finally making a factory long slide. OF COURSE! So noooobody wanted to buy my parts till they got down to a giveaway price. The double joke was on me, because once I sold it, I went and bought "the pretty turd". I should'a kept the parts Glock.
After I sold the turd, I bided my time until I found a Dan Wesson RZ-10 with adjustable sights.
A good, accurate gun, but the long slide itch was still there. So a few years later I threw common sense away and bought a Dan Wesson Kodiak, despite having the Razorback.
And if I'm telling my full story, my first 10mm was a Ruger "Buckeye" that I turned into a Bisley. Though honestly, after firing 50-100 rounds of CCI Blazer 10mm through it when I first got it, I never used the 10mm cylinder again, favoring hotrod "Ruger only" .38-40 loads in it.