This horse is just about dead
I come from the aerospace manufacturing industry... recently retired. There are two types of shops... manufacturers of product (the Sensenich Prop Co) and the repair shops (the guy in CT). Operationally, they are completely different. One group makes Parts and ships them to airframers (Cessna, Piper, Cub Crafters, etc.) and the other group takes in business from "retail" customers -- the flying public, as the A&P's dictate during Annuals. Oftentimes the manufacturer and the repair shop are one in the same, like Continental and Lycoming which will make your engine and reburb it as well.
Repair shops are formerly approved by the company making the Parts... in this case Sensenich... the 3rd party repair shops have to strictly comply with a Quality System approved by Sensenich. Quality System adherence adds a lot of cost to the repair process, i.e. the time and overhead checking and rechecking the prop as it makes its way through the repair/checking process.
The prop repair shop in CT allegedly was NOT following the Prop Makers' "approved" Quality Systems. Sadly, this happens when owners are stretched for cash, or key personnel quit, or good old greed, and they will bypass critical Parts checks and or repairs and yet charge the customer as if they are making the critical checks and repairs outlined in their OEM-approved Quality System.
In my professional opinion, Sense sold the shop and licensed their good name to the CT Shop Buyer many moons ago. The Buyer paid more for the privilege of using the Sense name. There probably was an ongoing repair relationship whereby the CT shop was allowed the privilege to repair Sense props as long as an approved Quality System was in force in CT. I am sure the Sense company is scrambling to figure out which props were "repaired and checked" by the CT shop... and Sense most likely has the right to enter the CT shop to inspect records, etc. The FAA is now in control (good) and reconciling the who-has-what-prop program right now. It is a major mess for obvious reasons. When a shop discontinues using a Quality System (oftentimes "fibs" i.e. checks the checkboxes without performing the work called out in the Quality System), the CT shop owners are in deep prop prop.