I was very happy with every repair Chaco did to my sandals. (I've got a pair that is nearly 15 years old and still going strong.)
Wolverine World Wide has done 2 repairs for me. One was less than stellar, but it was an extenuating circumstance with a very abused sandal.
Dave Page Cobbler was one of the authorized repair guys for the original Chaco, and I wouldn't hesitate to send a lifted sandal to him for repair. He did lifts for Chaco in the old days. http://davepagecobbler.com/
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson