a rift in the lute

A small problem or flaw in something that jeopardizes the whole. I hope this bit of rust isn't a rift in the lute and doesn't end up damaging the whole paint job.

Common Names:

Name	Pronounced	Usage
Carina (2)	kah-REE-nah (German)	Swedish, Norwegian, Danish, German
Graciana	grah-THYAH-nah (Spanish), grah-SYAH-nah (Latin American Spanish), grə-SYA-nə (Portuguese)	Spanish, Portuguese
Pauletta	paw-LET-ə	English
Thomas	['tɔməs]
BÅRd	-	Norwegian
Pankraz	PAHN-krahts	German