My cable length is a bit confusing, but is primarily double #4 three feet long with another foot or so of #1 added on. Plus some bits and pieces for the Trimetric shunt etc. My actual set-up is this--second pic-, but it does not show the wiring.
the blue #1s go from the converter up to the red inverter which is connected to the batteries with the double #4s
http://forums.trailerlife.com/Index.cfm/fuseaction/thread/tid/26237237.cfmI am saying that unless your wiring is really screwing up the situation, the converter should kick off at rated amps or slightly better, and stay there for a time. It should only taper right away if the rated charging amps are already more than the battery can accept at its AH size, SOC, and the absorption voltage.
High wiring resistance will make the converter 'see' the battery as being smaller in AH size than it is, or as being at a higher SOC. iaw where the acceptance rate is less at the voltage.
Mena-your Paramode with do constant 58ish amps if you ever get that massive battery bank down below 99% SOC while camping! :)