I needed a cabinet knob for my '06 for six months and WRV kept delaying sending one to me. I found that the knobs and pulls for the '06 were made by Liberty Hardware. I found the knob on the internet, ordered three of them a couple months ago and now have two extra. Buddy and Beverly, sorry I didn't know this earlier because I would have been happy to take your extra off your hands.
2019 Winnebago 22M
2015 Jeep JK Rubicon
Former Owner, 2006 Alpine Coach 36MDDS
Former Owner, 2005 Tioga 31M and Arctic Fox 22GQ