Have you contacted @RBoy to ask for it to be modified? If you have the DHT that means you paid the support and they’re incredibly responsive? That’s what you’re paying for?
Yes, if you hear me very wary about to modifying a DHT at this point - you’re right. I’d instead be asking for someone to write a proper EDGE driver with the feature you want instead in THIS thread:
Post Requests for Edge Drivers Here (community-created) - Devices & Integrations / Community Created Device Types - SmartThings Community
Or potentially trying out the default ZWave Thermo EDGE driver and seeing if it has the same issue.
LITERALLY anything besides modifying old end of life code when there’s plenty of supportable ways forward.