Dana,
for what it's worth Sage's repair department has told me it is like a "big" 10151-4. I've had a number of conversations with the Sage repair department regarding the 10151 which folded in the butt again. They've told me I'll be taken care of in the same manner ask Kush was, I'll mention it if not! Anyway, I was told to think of a big 10151 which got me thinking two ways, sweet caster, enough $$ in shipping and repair handling to buy a new rod.
andre