Welcome back RiderDuke, we went to three wheels back in 2013 with a Triglide and just bought a 2019 Goldwing with a CSC trike kit on it last month so far we are enjoying it.
Come on down this group is not about what you ride it is more about you riding and fellowship with the rest of us, besides it's been awhile since I have seen the can am up close.
I have a vacuum made for changing oil, I used it and then put water in the tank and used my shop vac until clean, may need to add a flex hose on the vac to reach all corners.
Carried Trina for a ride on the wing the other day and she says she could ride on it all day with no heat coming from the motor and the ride is so much smoother she likes it but we didn't push it to far cause she is still healing but getting better everyday. I did make a small addition to the wing I installed a volt meter with usb ports I was thinking I might need to charge the bluetooth headsets while riding.