Today, I spent some time getting a final order ready for ACS. I hope I included everything. Next, I removed the carburetor and drilled out the broken sensor. It was really easy. I used some small drills that basically removed the potting material out of the center, and then the rest of the sensor simply unscrewed into the center of the carb. I did everything with the carb upside down and nothing fell inside. Now, I'll discuss the way forward with the Vision Microsystem guru since they're no longer in business. I suspect I'll be able to order the $32 variety from ACS for the GRT systems.