Okay I called the competing yard and it reminded me of what actually happened. I apologize for the misunderstanding. But what the deal was is that Interlux has discontinued Ultra Bio and they use Super Bottomkote as its market replacement. And it is the Super Bottomkote that totally sucks. This confirmed by a couple of calls to local yards and they are all in agreement. So Trinidad SR will be my choice.
Prairie 29...Perkins 4236...Sold
Mainship Pilot 30...Yanmar 4LHA-STP...Sold
Carver 356...T-Cummins 330B...Sold
Meridian 411...T-Cummins 450C