I have just bought a 6.7 o/drive sail, luff length 464, recommended masts are 430-460.
I've got a 430 blueline that I wish to use but several options of how to go about it.
Can use my longest extension (red one in picture) or I have a 30cm mast extender that I can use with zero extension. With the zero extension I can use the one far right of picture, not a big fan of this though as the point loading is of concern. The other extension is a 30cm but wont insert fully into the mast extender so need to shorten it to fit.
Before I start cutting things any advice pros/cons of the options suggested appreciated.

I would use the good quality Streamlined extension with the 34cm extension. Looks perfect.

Trousers said..
Hey mate - I think you'll find that OD has a luff of 447...so you only need 17cms extension.

My bad, when I googled 2012 overdrive the sight gave me luff 464 and boom 190 bla bla, cant seem to find Severnes 2012 specs.