Keep in mind that the "light strikes" mentioned in a number of the posts above are perfectly normal.
Every round chambered in an 858 will have that mark, whether you pull the trigger on it or not. It's a by-product of the floating firing pin.
the csa vz 58's have tabs pre-installed. having said that i have probably 3 or 4 thousand rounds thru my cz 858...and have yet to experience the dreaded "trigger gremlin".
contact csa, maybe they can sell you a bolt carrier which may be cheaper than having sum1 charge you 100+ to do a tiny , simple modification......
maybe you have a misaligned or bent extractor?
I just sent my carrier out for tabbing, it was substantially less than $100. If your an experienced tig welder it's a simple modification, but assuming most people aren't, that's rather subjective. If it was a simple weld job, I would have done it myself, but after talking to the member tabbing my carrier, I decided to send it to him.
Thats the route i am planning. When mine is returned it will be sent to be tabbed. around how much is the cost? im happy to hear less than $100!
Also CSA will not send their tabbed bolts across the border!

thanks bros
those pic's really rock
from what i see, its just one little weld bead on the inside
-what is the tab thickness... maybe 1/8" ?
should be a piece o cake for anyone with a decent mig



























