I'm having a little trouble getting the action on my Yamaha RBX4 A2 as low as I'd like it without the string choking out past the 12th fret with the slightest bend. I've noted that the radius is about the same, if not slightly larger than the Billy Sheehan Attitude model (10"). He's a string bending monster! I realise that they are in different price brackets, but similar radius necks should be able to get the same action regardless of price. I was wondering if some kind soul could tell me how low they can get their action say at the 12th fret. I'll then know if I definitely need to spend money on a fret levelling job (which I think I will anyway). I've also been advised than I could perhaps get the frets ground into a slight conical radius that may help, any thoughts on this?