i also have a 9 maj. trubor, got it new in aug. last year. i have had the same problems as gentleman jim plus lots more.
i`ve had not only stove pipes up,but out the side, the spent brass has turned around 180 degrees & stuck in the slide, brass always hits the dot bracket as well as the bottom of the dot itself.
constantly jamming, i`ve even had the complete cartridge turn around 180 degrees after the brass was ejected, { when it did eject } . you could not shoot a full mag without some kind of jam. i could go on & on with the problems, & yes i tried different wght. recoil springs
from 7# on up made no difference, tried different bullets & seating dephts no difference.
sti sent me tuned ejector & xtractor made no difference.
so, sti wanted it back, sent it back on 1/8/07 it`s still there & not fixed yet.
you know you pay that much money for a gun, wouldn`t think it sould run..
still no word on when i`ll get it back