No, they were great about customer service and replacing them.
No, I don't think anyone on here should have qualms about purchasing yours. AND....if they've worked this long they probably will. I had problems with mine in less than 100 rounds.
However this forum more than most is pretty particular about having reliable scopes. Other forums TALK about quality optics and buy cheaper stuff.
WTA seems pretty good at buying what works, some cheap stuff works good, some doesn't.