well, right now, i have 2 CZ's...a 75B and a 97B
i love them both, they run flawlessly.
the 97 B, only has about 200 rds thru it now, as it is fairly new, and i "rotate" all my guns each range trip. (6 in total right now...more to come...lol)
my 75B has just over 1500 rds, and i have had that since about March of this year.
so, i have been one to "be prepared", and no, i was never a boy scout.
so i just went ahead and ordered up 3 TRS's from cajon, only $7.00 each, and they are lighter springs at that, that are made of music wire???
i will put those with the 2 new firing pin roll pins, i bought some time ago as well.(from cajon as well)
will i ever need any of these parts?
maybe...maybe not.
i am NOT abusive to my guns, i DO NOT dry fire them, with out snap caps.
i clean and lube each gun, after each range visit
but, i will continue to LOVE my CZ's.
just as much as i LOVE my Taurus G3c, Canik TP 9 SF, Glock G-17, and the Remington R1911
i think the o/p may be a bit abusive with his firearms, to have had so many TRS's break.