Be careful with that ninja you could get kawasaki disease:
Kawasaki disease, also known as lymph node syndrome, mucocutaneous node disease, infantile polyarteritis and Kawasaki syndrome, is a poorly understood self-limited vasculitis that affects many organs, including the skin and mucous membranes, lymph nodes, blood vessel walls, and the heart. It does not seem to be contagious. It was first described in 1967 by Dr. Tomisaku Kawasaki in Japan.[1]
http://en.wikipedia.org/wiki/Kawasaki_disease
Best bet is to sell it and buy a yamaha