How is Wally Tools anti-skate device for JMW?

Anyone tried the anti-skate device Wally Tools made for the VPI JMW arms? How well does it work? Any down side?
Hi Sid....I thought I'd see a thread like this started by either you or me! I call VPI and they are raving about this device......I anxious to hear also.
TWL......have you any comments???
No idea.

I don't have a Wallytractor, nor a JMW.
Couldn't even guess how they're doing this to an arm that doesn't have an anti-skate mechanism.
Post this question AA. There are frequent discussions of "Wallys" there and Mr. Cleaver, himself, answers a number of questions.
4yanx, thanks, I will try that.