Barley Twist Table Modeling Question

[Mark's Wood Chips]

I'm trying to make David's Barley Twist Table (In the labs with David project) and I'm creating my own file by watching the video. When I add the 3D circular tab that defines the gentle taper of the twist, David instructs to set the model height property to -0.6 and at that point strange things happen. Multiple attempts finally get things looking right except when I look at the 3D tab properties, it reverts to positive 0.6, yet it looks correct on the 3D screen. Next, I downloaded the file from my V&CO account, took a look at the component and guess what, it is also a positive value, yet it is clearly a negative appearing tab. What the heck is going on?

[Mark's Wood Chips]

I see there is a discussion on the Rotory forum about this topic so I'm taking my discussion over there http://forum.vectric.com/viewtopic.php?f=38&t=32511