I filled them up using Flexane 80A. It takes up to a week for them to set at room temperature.
I first did the bottom side and there was a break in one of the bushings rubber meaning the urethane poured into the other half of the bushing when it was upside down.
not so good bushing with urethane slowly went down. I didn't bother putting new urethane over the 12 hour old set stuff.
better bushing
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