maybe try this
You might just try to find someone to weld it, maybe dril out both sides and have both feet welded (the good one may be ready to fail). the reason to have them welded is that you will know for sure that it will fit the holes in the mast. finding someone to weld stainless steel should not be do hard. i just had to have that done for my 222 because no one makes that part. there may be some warping of the base due to heat but a little time you can fix that. of course all of this is for stainless bases only,,, some are a pot met type. in that case NEVER MIND... good luck bob