It took me most of 3 months to sell my primo, perfect, farkled-out but mostly stock, Kawasaki Concours 1400. Started in early March and finally had a serious buyer in May-- only the second serious buyer, but the first one was a jerk. The buyer had done his homework, experienced long-time rider and didn't even ask for a test ride after seeing it in person. We met up the next day and "poof" she was gone.
The weather this spring has had an impact. Local bike dealers are saying things are slow, just now coming up to normal levels.