Weldon,
My 22S has been totally reliable with the right ammo, and has several thousand rounds through it so far.
The only ammo that did not work, was T-22. I bought a brick of that when my shop ran out of the Federal Target 711 I'd been using, and about 30 percent of the T-22 rounds failed to fire!
When the 22S was new, I bought a box of everything that Walmart had in stock, except the cheap bulk packs, and none of it failed to fire!
I don't know why T-22 causes problems, but I've talked to others on various forums who had the same problem, so I think it's something to do with that brand.
Before you get rid of that 22A, I recommend trying Federal 711, or any other reasonable quality 22 LR ammo, to see which one's are reliable in your pistol.
Also, the nylon recoil buffer pad in the back of the slide takes a beating, and should be replaced every few thousand rounds. Smith sent me a free bag of recoil pads when I called them, and they take only a few minutes to install.
Bill