I got my new fins today and put them on. The masts seem to be about a 1/4 too long. I made sure they were fully seated and teh fin is still about 1/4 inch from the base of the drive. Also, the notch for the chain drive is not lining up with my chain/sprocket. I moved the unit through it's full range and it doesn't bind anywhere. Should I be concerned? Should I grind a 1/4 inch from the bottom of the mast? Mine use the set screw, if that makes a difference. I made sure that they are in the right direction.
I'll be giving them a test run this weekend at LJ, I'll post my results.