Where to find a shorter Tiller

OK, so I finally bought a sunfish after 5-10 years of wishing/wanting. What a blast I've had so far cept that I don't care for the raised edges on the cockpit and the tiller is too long such that when I want to sit on the back center of cockpit there is not enough room for my butt and the tiller. Seems I need a tiller about 6-12 inches shorter than what I have.

I realize the design is such that your supposed to sit off to one side while sailing, but I find it difficult to sit off to one...

Where to find a shorter Tiller