cavelamb himself wrote:

I'm sure it would make a difference, but I'm not sure what "tank resin"
is called when you order it.
Do you have a brand name or more specific reference?

ProLine, now a division of Sherwin Williams, in San Diego makes a tank
resin that is also used as a high build primer under their L/P coatings.

Has considerable VOCs so I'm sure its sale is restricted to marine
repair customers.

There are at least 3-4 other manufacturers out there.

I use ProLine since they are less than a mile away.

Lew