High Grade Watch, Inc Plano, TX

Wondering if anyone here has any experience with this watch service company in Plano, TX. My Midsize SMP 300 has recently gone from losing 6 seconds a day to losing almost 40 so I'm going to assume I'm in need of a service. They have a lot of good reviews on yelp and google but I thought I'd check here and see if anyone has dealt with them.

Thanks in advance!

https://highgradewatchinc.com/