I'm honestly surprised to hear all of this. I know a number of people who have XDs and XDMs in various calibers and none of them have had any problems. One friend of mine easily puts 200+ rounds a week thru is 9mm and it never misses a beat. I personally own a 4" model in 45ACP with at least 3000 rounds thru it and I've never had a problem. I've also got a 9mm 3" with close to 500 thru it now and I've never had an issue. I love my XDs.
I'll be interested to see what solves the problem. How has SA's customer service been to deal with?
If the pain is lacking so is the discipline...
"the only 911 call I need is chambering a round" - Mr. Muller, MO car dealer