Ok, new Debut Carbon TT, my first. I set it up, adjusted the downforce on the tonearm correctly. I got a Shure weight gauge to be a little more accurate, and sure enough it was a couple notches too light on the counterweight dial (the manual recommends 17.5 on the dial, but the 2M cartridge is supposed to be at 1.8g downforce and the force wasn't reading exact, so I guess my eyeball balance when I lined the dial up to zero wasn't perfect. But, I adjusted that and everything was great (it was then lining up at around 18.5 on the counterweight dial).
Fast forward a week or so, been listening with no issues. I go to put on a record today, and when I drop the tonearm with the cue lever, it doesn't even touch the record. "What the hell?" So I put the cue lever up again and try once more. It drops down to the record but something doesn't seem right, feels light, and the record doesn't sound right either. So I break out the Shure gauge again and it's way off. It's not even raising the weight when I drop the stylus on the gauge. I adjusted it so it read 1.8g again, but now the dial on the tonearm is at around 20, which is much higher than before, and higher than what it's supposed to be. I even started from scratch with the balancing and got the same result.
Nothing happened to the TT, everything is still brand new. What happened? I'm a little freaked out that something in the tone arm mechanism is messed up, but I don't know enough about this. Anyone have this experience or have an idea of what could be up with it? I'm worried about continuing to play records until I know it's alright, and am weirded out that all of a sudden it randomly needed a heavier adjustment of the counterweight.
Thank you for your help/advice.