It is unusual that using virtually the same technology, the batteries have different specs for being fully charged and equalization is not recommended. Perhaps the Dyno batteries are a bit different in construction than standard wet deep cycle lead acid batteries.
Some additional info I learned directly from Trojan Tech Support: When I spoke to Trojan's technical support people years ago, I was using my batteries for back up nearly every day because we got less than 12 hours of street power back in the early 2000's . There was never a time I had power on long enough to perform an equalize cycle. I was told by Trojan tech support that my heavy use of the batteries was already distributing the acid throughout the battery and one purpose of the equalization cycle was to evenly distribute the acid so it does not corrode the plates and cause an early failure of the battery. He told me equalization should only be performed if specific gravity measurements were different by a certain amount between the cells. I don't recall what that difference was, but I think it is part of Trojan's battery information on their web site, or a quick call to them would provide the answers.
Another point, when a chain of batteries has a battery at a radically different voltage than the rest of the chain, it is probably a good idea to try and equalize the batteries , but specific gravity measurements will lead you directly to the battery cell that is the problem. That out of spec battery is soon going to cause stress and failure of the other batteries.
I have tried every battery I could find in the DR, and ended up using Trojan T105's. They seem to perform best in the punishing tropical temperatures.
Good luck with DYNO. I had seen them for sale but didn't bite. Since you use them daily as solar back up, the EQ cycles are likely to be less needed for any lead acid style deep cycle battery, but why they never recommend it is puzzling.
