Hang in there Gunny! It is a learning experience most of all.
I am glad to see others persisting at this.
Being an electrical guru, I am sure you have considered that low amps is a result of wire size and the number of windings in the generator. I would say RPMs, but you have the flow. The charge controller could be oversized too I suppose.
How big is your wheel? What style is it? What is the cup capacity?
What is your RPMs without the electrical system connected?
What type of generator do you use?
Good luck! If you find the magic combination, I'd like to know. Thanks.