There's been quite a few variations on the earlier ams - yours is the carbon fiber one, I believe?
I got permission to reprint the email from Stanalog so here it is:
Hi Steve:
Glad you're enjoying your WTC.
Was the arm azimuth working correctly beforehand and then changed suddenly?
What changes, if any, did you make between the time the azimuth was pretty much constant across the LP and it began to drift?
Do you see the stren (nylon line) moving of its own accord during playback?
Does the amount of damping fluid in the arm's cup just barely cover the paddle, as it should? The level of fluid should be merely sufficient to secure the arm in the vertical and horizontal planes of movement.
Can the paddle/poker chip rest level in the cup with proper azimuth set-up?
Please remember that the WTA fluid acts uniquely as a "quasi" arm bearing; in effect the fluid IS the bearing, unlike other arms that use damping fluid as an additive to try to offset mechanical shortfall or chattering, which all other arm bearings have to varying degrees. Chattering is undesirable vibration because it introduces a micro counter-action to the ideally passive retrieval/movement of the cartridge supported by the arm. In crude terms, the objective here is to allow a rock/aka stylus to drag through/navigate a rut/aka record groove without any other mechanical interference from the arm. The degree to which given bearings deviate from the ideal of no deviation at all is part and parcel of other pivoted arm designs. In other words, the best bearing is no bearing ,or, in practice a unique "frictionless" bearing like the WTA's.
Azimuth performance should be independent of the above.
Alongside the above, please bear in mind:
1.Too much fluid will slow down the arm's mechanical movement and interfere with the arm's tracing and tracking, kind of like too stiff suspension on a car
2. Too little fluid can allow the arm to skirt the groove wall to some extent because the fluid isn't sufficient to act as a "quasi" bearing, kind of like too loose suspension on a car.
Let us know the answers to the 5 questions above.
Best regards,
Stanalog
I wonder if any of this would apply to your anti skating issue?