Hi Tony, just an update. Got my radio back from Horizon, they re-calibrated both Gimbals and replaced the RF Control. Re-bound it to my 450L and the first spool up normal and idle up, got the vibes on both modes. Found out that on the 450L you can't have the main blades too tight, loosen it and tightened it enough with small amount of resistance when you move each blades, snug fit..and the vibes are gone. Did the same thing today couple of hovered flights and zero vibes.Still using the 3GX, I was gonna pick the Vbar this weekend but the way it is right now don't think I need to. Thanks again for all your help.