My 318 w/850 Thermoquad never idles well in gear, and stumbles off the line

The TQ secondaries are adjustable to supply the needs of almost any engine, and for sure any SBM.
The 2 primary sizes are also a fine design to adapt it to any engine.
This carb is dynomite on any high-vacuum engine, and can be adapted to any SBM that I have encountered with up to the 292/509 Purple included.
If in my lifetime, I could only have one carb, it would be a TQ; hands down.
If only they were better supported in days gone by. I bought a box full of them and inherited others, to the point that I now have a pretty good selection of tuning parts. That's great for me, now,but was a PITA before that.