| front brake
i had the same problem on my 749BP 2005 model, took it back to On Yer Bike and they tested it thoroughly on the road and off. Informed me that the front discs were slightly warped and they are changing both discs and pads under warranty. I know what you mean by symptoms it's as if the pads are not gripping the discs properly, slight pulsing/vibes and a weird noise. I will let you know if new discs/pads sorts the issue. | 
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