Serious question, has anyone else seen a dredge pump go from a whisper to a banshee scream in a single shift?

We were working the old channel near Mobile Bay, and the main pump on our 12-inch cutterhead was running smooth all morning. After lunch, it started making this high-pitched whine that got louder every hour. Turned out a crewmate had swapped the suction screen for one with way finer mesh from a different parts kit, basically choking the intake. Had to shut down for three hours to swap it back. What's the weirdest noise you've traced back to a simple part swap?