I'm in the process of mounting some winches to a mast. The winches are Merriman No. 2's with a base diameter of 4.25 in. The alminum mast is eliptical with a cross section of about 8.25 in (forward to aft) by 4.25 in (port to stbd.). I need some winch bases of stainless or aluminum to attach to the mast so I can attach the winchs to these bases. Anyone know of a source for these mast winch bases?