Tenuki went by with a stink bomb!
Actually, the cabin mounted masts do have some issues if not taken care of in that they will destroy the cabin top. I know of two Jeanneaus like mine in the puget sound region that have had that issue. Both got fixed, I think with a metal plate under the mast, down to the compression post.
Not sure what else to say, other than find another C30, with the hull in reasonable shape, but without the stuff you have?
Where abouts in the other seattle are you. Dad lives off of Fauntleroy, south of the car dealers by the school/park.
marty