Non technical related Lip Sync issues for musical bits, especially in group settings are so common across the board, anyway. I'd be willing to bet that that Chill Wills out of sync bit is in EVERY "Way Out West (1937)" print.I noticed a slight out-of-sync issue in WAY OUT WEST at the start of their dance number in front of the projected screen. It's when the Avalon Boys are singing. The guy that does the low-end yodels is out of sync for a few seconds.
It's very slight. Didn't put much thought to it until you guys brought up sync issues.