[Clem1640]

No. This was not a significant problem.

We did check chain tension in the pit. If loose, we utilized the 80/20 grooves to tighten the chains (loosening the bearing block bolts; shifting the blocks to tension the chain; tightening the bearing block bolts). This was probably a once-per-competition event.

We used economy nuts in the 80/20. We have generally found that these do not tend to slip if they are tight. In fact, they tend to bite into the 80/20's aluminum and need to be tapped with a hammer to move after loosening the bolt.