Hmmh

Well, I've been to the boat... and can't get the bloody starter to fit.

So I come home thinking I've ordered the wrong one, and on comparing with the old one, it's identical... I mean completely identical....

The starter was locating, but was about 10deg out... Which the bendix would normally deal with... But not sure what was causing the problem... It's like the casting was fouling internally... But it's identical to the one that came out!!!

Will return and try again... This time with the old one to hand as well