Here's a side of elastomer suspension I'd never seen. This Proflex came in with the elastomers squished and stiffened. I'd seen elastomers harden so they no longer provide springiness. I'd never seen them deflate like this.
I dug up some elastomers that didn't have a lot of bounce, but would at least hold up the rear triangle. The owner understands that this bike can't be ridden like a new one.