Call me, Andrew. I am back on the N.E. side, in Lawrence. 372.6890
We could probably get this resolved this weekend.
You need to check the connections at the battery, of course, but you also need to check the other end of both the positive and negative cables at their other ends. For the positive, this means removing the fuel tank and starter cover. And be gentle with the fastener on the negative cable on the transmission. You don't want to strip it out.
Also, on the positive cable, generally on the end that connects to the battery, pull back the insulation a bit and see if the cable has become corroded on the inside. In that case, a replacement cable is in order.
All connections need to be clean and bright and reassembled with dielectric grease. (radio shack or auto parts store)
I'm glad you finally got the R65 you have been wanting!