Hey Dave,

Thank you for the explanation.  I think you should post that explanation in the WIKI because it is so good and there really isn't any real specific info on it there!

I think the problem I was having was I was entering a negative (-) value in the backlash box.  I'm going to change that and try again based on your post. 

I think that I'm going "give it a rest" for today though.  The frustration level meter is starting to peak and I think it's good to take a break when that happens  I'll let you know how things turn out tomorrow!

Thanks again!

Sid