Graham Phantom damping fluid level.


Bob Graham says to use enough fluid to bring the level up to the top of the square profile machined on the bearing cap. The square is only about 1/4" in length. My question is, What level works best for you in relationship to this "square" profile?

I have tried only 3 different levels of fluid in my setup (maximum level to top of square, almost no fluid at all, & to the bottom of the square) but can't seem to obtain optimum results so I'm wondering what others use, although I guess it's really cartridge dependent. Is the fluid level super sensitive? FWIW I'm using a Koetsu RSP.
frank_sm
I know there was an updated bearing cap. I bought one! The point on the end is much sharper than on the older caps. VTA , VTF, and lets not forget playing with cartridge loading!
Frank_sm, 2 mm is from the end/tip. I agreed with Sirspeedy, a little change in fluid will change the sound. Good amount of fluid plus right VTF can get the best out of the Phathom. Too much fluid makes dynamice slow and sluggish.
Since when is the update on the bearing cap? So is there are new fluid as well?