Cannot work out for the life of me if it's the frame or me. I have a 3 year old high quality steel hardtail frame from a well-respected brand. I put new (wider) wheels on it a few months ago so I could run fatter tyres and noticed the front mech was rubbing on the tyre. Close inspection showed the rear wheel wasn't straight in the dropouts. Got a bike shop to check the wheel was straight, and they stuck an alignment tool in and confirmed the frame was 2-3mm out of alignment at the dropouts.
Spoke to the manufacturer, who gave me a warranty replacement straight away. Put that together today to find the wheel was well out of line again! Sits ok in the chainstays but well over in the seat stays. Put the wheel in my full suss frame but it's fine in there. Put the wheel from my full suss into the hardtail and that's skewed as well. So I can only guess the frame's out of whack.
Can there be anything I'm doing wrong here? I can't believe a frame of this quality is missing alignment checks in manufacturing…
Don't want to name the brand as they've been very good about it and don't deserve an internet bashing IMO but any thoughts gratefully received