Bike feels very balanced with the two, they are a well suited combination IMO.
I ran the linkage in the "coil" position on Saturday at one of the local digs, and in the "air" position on Sunday for an extended ride and found that I like it a bit better in the second position. Just something ineffable to it that makes it a bit nicer in that mount.
Both dampers are basically centered in rebound (and compression in the case of the 66SL1), sag is set at 25% w/o riding gear. Currently running a 700# coil (me == 225#, and for those who don't know the Quasi is 3:1 leveraged).
I tried the TST switch in varying positions and found it notably different not only at the extremese, but in the middle "positions" too, so nicely tunable on the go. I did not ride it in "CL" mode when goind downhill as I did not want to violate the 'zoke guidance in the manual to not do that, but everything else got samplers in at least 4 postions of the lever.
Nicely done zoke. The Quasi has gone from double-Fox to double-Zoke, and it's been a fun and nice changeover.
Now, where to ride tomorrow ... please hold off rain ...