One other derailleur problem I should mention is that of chain overshift or overshooting the gear you select.

We propose that the leptomesons can generate also the baryon asymmetry that explains the imbalance in ordinary matter and antimatter in the observable universe.

LXII. MORYSIA. Cass. / Achenium calvous, terete, furrowed, wingless. … Glabrous shrubs, with scattered oblong, dentate, or entire leaves, and corymbose yellow flowers: closely related to Athanasia, from which they differ in the calvous achenia.

Advise him to stay a little longer till the weather clears up.