Question for other L30 owners - while the volume pot feels smooth and a bit 'damped' in a good way when adjusting (like not gritty plastic-on-plastic) there is also a bit of 'looseness' around the adjustment point; meaning I can rotate or wiggle the knob a few millimeters each way without actually adjusting the volume, then when it hits the end of this 'loose zone' it adjusts the volume. Does anyone else have this imprecise center feel on their volume knob ?