APM120 on Vinten11: with Tilt drag adjustment knob at max, I have found that when I turn the Balance knob to a very high level like 23, then the rig is usable even with a pair of APM 12.5mm which are heavy. (wondering if I shall release the knob after observing)
I am using the Leofoto LN-404C without any elevator (oh my back) and COG is elevated by the Starsense contraption with the phone (working well for push-to).
The Vinten11/tripod is lightweight compared to the DM-6&L bracket.
Still deliberating about Supermount with elevator under Vinten or the proven old route, Manfrotto161mk2b and fork.