We went to the airport to meet Randy and look at his Bendix, but he was running late. I took Mum for a flight towards him, and when he passed us (ADS-B - I never saw him) we turned and followed him back to Lincoln.
After lunch, we looked at the Bendix, and I think the problem is the wrong grease - moly rather than the waterproof W-100. As it's been sitting outside for a while, that's affected it. We cleaned and regreased it several times and it seems to be working better now.