Let me suggest never taking those knobs off. I've had my 07 apart many, many times and never removed either knob. The trick is to simply unscrew the knurled nut that holds the speedometer cable to the back of the adjust mechanism and then pull that panel off with knob and adjuster fully installed. Super easy (as long as you realize the speedometer cable is square and must be rotated slightly to go back into the hole upon reassembly).After a zero speed get off in the driveway, (sidestands are not overrated, but have to be all the way in place), replaced left side mirror and reassembled left side bag, after getting lid back from Garauld. Great service, by the way.
While buttoning back the dash panels, tightened nut on headlight adjustment knob too tight, broke holder. Ordered replacement, so get to tear it apart again later this week. It's times like this that naked bikes look very appealing...