I’m having an issue with my chain falling off the lower pulley wheel when (1) I hit a significant bump or (2) shift from large ring to small ring. But only in cogs 6, 7, 8. Any suggestions? I’ve checked derailleur hanger, put on a new chain, checked chain length, adjusted micro shifting and it still does it. Groupo is a year old, never crashed, and is on a Canyon Ultimate CF SLX. Thanks in advance.