I will have to check that out tomorrow. I had more that 400 rounds through when it started. Works great right now.I have one. What was your manufacture date? Mine is 05/16/18 and I haven't had any issues yet with around 400+ rounds through it.
I could really feel a difference, although I can't explain what. It did well today and I hope that continues. Plan on putting at least 4 or 5 hundred through before I go back to carrying it.