Sounds like you have already sent it to your son. I was going to suggest that you consider putting a conversion kit on your current bike, especially since it is in such great shape.
I would never say anything bad about the RG# - however would suggest that a trike conversion has independent suspension and will probable handle much better.
You are about 30 or so miles from me - you are welcome to stop by and take a look at my conversion. I have a CSC and it comes with a 5 year warranty. MotorTrike has one that would be great for your bike. Plus, there is a trike builder not too far from you,