Ca2284,Firstly--A xv-1s is quite a heavy cartridge,and would probably be a better match for an arm like the Phantom,Schroeder,Dynavector's own(excellent)507 mk 2,and some other contenders.The 2.2 may work with it,but it is really not ideal with cartridges like this,or the more massive Koetsus,IMO.
As to your NOW experimenting with adding an additional drop of fluid,I'd like to emphasize (strongly)that you work in tiny,as in pinheads at a time,of the damping fluid.This is SO critical,you won't believe it.You want to shoot for a very detailed sound,yet not a damped sound.There should NOT be any brightness with a high performance cartridge like the ZYX,that you have.Adding drops at a time is WAY too much to properly voice the arm/cart. interface.
Best of luck!
As to your NOW experimenting with adding an additional drop of fluid,I'd like to emphasize (strongly)that you work in tiny,as in pinheads at a time,of the damping fluid.This is SO critical,you won't believe it.You want to shoot for a very detailed sound,yet not a damped sound.There should NOT be any brightness with a high performance cartridge like the ZYX,that you have.Adding drops at a time is WAY too much to properly voice the arm/cart. interface.
Best of luck!