Interim update to fill the void, should have quite a bit more this weekend. But to tide you over, let’s talk tires.
Motorcycle tires are curved as a single-track (front and rear share the same single-path) vehicle must lean to turn, and you need tread out there to keep the black-side down. This results in a contact patch about the size of a postage stamp, but it works.
A car is a dual-track (front and rear share same path, left and right do not), and the trike is a triple-track (front right, front left, and rear do not share a common path at all). All that track nonsense is fine, the bottom line is no-lean.
Bikes (and bike tires) are designed for lean, but given we have none, we need to swap tires. (I will post an article later about sump baffles as well, because we’re doing that too).
Anyway, the moto tire went away, and we went with a Longstone “vintage” tire from http://www.lucasclassictires.com/ . The cross section difference should be obvious.