So, we've decided to make a BT-30 headstock that can use drawbar or ATC petal clamp system. I like the TTS, but runout adds up when you stack a collet and tool holder together. Plus, .0001" to .0002" runout BT-30 tool is everywhere and cheap. Check it out and let me know what you think: https://glockcnc.com/chinese-mill-bt30-headstock/