I, too, have the Universal WallyTractor. I'm glad I bought it (over the non-Universal) simply because I've changed tonearms in the time that I've owned it.
If I had my druthers, however, I'd prefer the non-Universal WallyTractor. The null points (where you set the zenith angles) are on a different line from the overhang arc. This takes a fair amount of bending/stooping/body gymnastics to get the stylus accurately positioned on the zero points. The non-Universal version's null points are marked on the overhang arc so there's no more repositioning (and no additional body-gymnastics) of the WallyTractor to line up these spots.
Chris
p.s. Fortunately, I had no difficulties ordering my Tractor through Wally. It arrived to me days after I ordered it from him.
If I had my druthers, however, I'd prefer the non-Universal WallyTractor. The null points (where you set the zenith angles) are on a different line from the overhang arc. This takes a fair amount of bending/stooping/body gymnastics to get the stylus accurately positioned on the zero points. The non-Universal version's null points are marked on the overhang arc so there's no more repositioning (and no additional body-gymnastics) of the WallyTractor to line up these spots.
Chris
p.s. Fortunately, I had no difficulties ordering my Tractor through Wally. It arrived to me days after I ordered it from him.