Cartridge Tacking Problems - Help please


I have major tonearm/cartridge tracking problems that seems to have gotten worse, leading me to believe there's a problem with the arm. Can anyone suggest what I can/should try to further diagnose the problem?

Here's what it's doing:
On some (becoming many) discs, the cartridge will just skip out of the track, as though there's a scratch, or someone bumped the stand. Changing the anti-skate setting (ie over driving the anti-skate to 2.5) helps a little, but doesn't cure it.

Here's the set-up:
Pink Triangle original table
Audioquest PT6 arm
Signet TK7SU cartridge with new stylus
(the the problem exists also with the old one)
I have no damping fluid in the trough at present

Here's what I've done:
Table is leveled and set up properly
Arm/Cartridge is set up and aligned (and quadruple-checked)
Tracking force is set at 1.75 g, which is the max recommended by Signet. I've always tracked this cartridge at 1.25 g on my old table and it worked beautifully.

thanks in advance!
bdgregory

Showing 1 response by dopogue

Just some thoughts. Are you using an external scale to set VTF or relying on the tonearm scale if there is one)? Have you taken the arm lightly in hand and swung it over the record to see if you can detect any points where there is less than free motion? Have you tried using damping fluid (I realize it may be hard to remove)? Is this a new arm (for you) and did the problem exist with an earlier arm? I agree it sounds like a tonearm problem. Good luck, Dave