Hey, Jim. I have both boats as well, and I have not had a similar experience with my 14. We both thought of the obvious, water in the mast, but you seem to be convinced that this is not the case. Nonetheless, if I were you, I would do the standard mast vs. water test. The mast on my 14 seems to be water tight and virtually floats like a champ. Have you had the main sheet out of the cam once the boat is in the water?

If all else fails, you would look pretty damn cool if you added the hobie bob... Watch out H14 nationals!( sarcasm )

Don't feel too bad though; some people seem to have trouble with the 14 even whilst on land.