The XT was a clean sheet design, as was the SRX600 or GB500. The Electra/AVL was the evolutionary Swan Song of the Pre-Unit era. As a PU, the machine is inherently heavier than any succeeding UCE designs. It's also a long stroke design from an era when MPG was paramount, octane was stupid-low, roads speeds were slow, and heavy, high kinetic energy storage flywheels allowed the kak hardened-pencil-eraser-rubber of the time to hook up with the tarmac and terrain. It was a design appropriate for the conditions of the time.
As octane ratings rose, disposable income rose, rubber tires got better, road surfaces improved, horsepower & multi-cylinder engines became the norm. Racing-derived suspension & geometry found its way to the showroom floor. Clean-sheet designs around an entirely different set of parameters have different outcomes. Try finding user-replaceable tappet guides or cylinder liners for a CBX or ZX14, or replacing the piston rings in the average 4-cylinder without pulling the engine out of the frame. Different time, different tech.
Sorry you are going, glad you found something that holds your interest! - ACR -