J-props on ebay, older model?? Anyone buy one?

[Northeaster]

A guy onb Ebay has J-props, new in box, for what seems like a great deal. However, the pictures sho quite rounded blades, whereas the J-props site shows more elipitcal blades.

eBay Motors: J Prop Adjustable Pitch Feathering Propeller (item 140303797241 end time Mar-03-09 12:57:51 PST)

Is anyone familiar with design changes? How did the rounder blade models work?

Finally, the models I need would be a 14" or 15", to fit a 1" shaft. The guy has them, only to fit a 7/8" shaft. Could I have the bore machined to fit the 1" shaft? Or, have the shaft turned down to 7/8" at the end?
As the shaft and bore have a taper, I am not sure if it could be easily machined to fit.

Thoughts??