I fixed my tilted 510 by attaching an old crappy squape clone and leveraging it straight. I went really slow and applied just enough force. Obviously you have to be incredibly careful but it worked out okay for me.I've had mine for over a week now and just today noticed that I have the dreaded "crooked 510" problem that a number of people have reported. I noticed my tank sits on the device crooked. It isn't extremely noticeable unless you look closely, but now it is driving me crazy. A guy on Reddit said he hammered his down (it is press fit apparently). I tried that but no luck. I don't want to hammer too hard. Maybe I need to put more force into it.
I've always heard pioneer4you is hit or miss and their QC is lacking. I guess I was one of the unlucky ones. I am not furious about it because the device works well, but man little things like this drive me crazy.
Disclaimer: Do at your own risk!