We sold and installed 3 spragless TAs back in the day. The first one worked very well. Unfortunately the other two didn’t. The problem with them was when shifting the TA under load, the tractor would almost come to a stop before it would abruptly engage. HyCap tried machining a bevel onto the TA spool in the MCV. That did improve shifting on one tractor but not the other. We didn’t sell anymore after that. Had customers ask about them from time to time but had to inform them about our experiences.