Sorry to hear of your problem - Ruger will make it right.
I've had a 357 LCR for quite a while now and it's my carry piece. I haven't had a lick of trouble with it. Whether it's right or wrong, I was always brought up to not dry fire and so I have never dry fired my LCR or my other pistols - my practice comes from firing live rounds. Like any SD DAO, the trigger pull is longer and stiffer - but I easily adapted to it and don't even give it a thought now. I practice with live rounds as often as I can and mine just gets better.
Don't give up on it - any pistol - semi or revolver can have a problem. Ruger will make it right. Before you give up on it, get some live fire practice in with it and then decide if it's right for you or not. Good luck and sorry that you had to have a bad experience with it.
If a pair of '51 Navies were good enough for Billy Hickok, then a single Navy on my right hip is good enough for me . . . besides . . . I'm probably only half as good as he was anyways. Hiram's Rangers Badge #63