[herr_oberst]

Wow, nice work and Bravo to Vicki for letting good enough be good enough, and to you for just getting busy and fixing the sink, rather than waiting to 'be made whole'. Life's too short.

Funny thing about those snap-toggles. Personally, I absolutely love 'em. I never have a problem using them and they are so much better than the molly bolts of yore, In my humble opinion.
But.
When I worked at the hardware store a couple of years ago, there was a surprising amount of return and shrinkage because of what you just said - it seemed like one of every two were ruined in the process.

This is absolutely no reflection on anything or anybody. Personally, in the long run and the bigger picture, I'd sooner be good at lots of things other than a modern take on the molly fastener. But I have to take my wins where they happen.