I've never seen a stem THAT stuck on such a new bike. I'd put away the chemistry set for now, and see if lube and carefully applied force will have an effect.
I've seen people loosen the headset top nut with the intention of removing the stem, but that has no bearing, so to speak, on securing the stem into the steerer. It's the 6mm allen bolt at the top elbow part of the stem that tightens the wedge. If you get that bolt really loose and tap/whack it with a hammer, 97.3% of the time you'll break it loose. You can also sandwich the wheel betwixt your legs whilst you twist the handlebar side to side (again with the bolt very loose, and don't twist hard enough to break/bend the fork or the wheel). And don't hesitate to visit your LBS if you have one you like. Some of us bike fixing types are full of tricks and it'll probably be easier and cheaper than you think. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/Tw3vUMl_pFoJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.