Last Friday I purchased a Tern vectron q9 folding bike. I watched several videos on the proper way to unfold and fold the bike. I’ve been practicing folding and unfolding and I think I’ve got it. The only problem is whenever I try I get grease stains on the tops of my shoes. When I try to avoid moving my feet so as not to touch the chain, I fail to get the bike opened or closed successfully. Is anyone else having this problem, and have come up with a solution? Ed