I had the same first problem with my SW Pro and was convinced it was a node board issue. I called Stern service and they very quickly were able to help me diagnose that the problem was actually a short, and narrow down where to find it. There was a kink in a wire under the flipper assembly that broke thru the insulation, and the wire was making contact with the metal flipper assembly. The Spike system was shutting down the GI and solenoids on that circuit to protect the boards.
I have not had the second problem on my Aerosmith Pro. Stern service might be able to help with that one also.