RON!!
Three Hail Mary’s would have been way sufficient.
You’re right, the c30 MK-II had Yanmars (a superior engine, IMO.)
I tend to shy away from exactly what was installed in 34s, which you and Stu are better schooled in! I just try to stick to Universal/Westerbeke generalities and the many nuances.
For instance, the 30 actually had two, slightly variant m-25s. While the 34 (apparently) had only the later variant m-25. The differences are slight, yet noticeable.
Interesting that, like CTY, Oshkosh did what it needed to in order to get engines out the door. Apparently short on Ob pumps, my m-25 had an OEM adapter plate so that the 202m-07 pump could be installed in place of the more typical m-15 pump.
Max is a short-timer. SherMax was SOLD!