It might be one for another thread, but Im lucky in that I only need to remove 1 of my 2 mats and it approximates the 'running' arm angle for most of my records. One positive though, I've been getting better tracking over warped records, maybe due to the slight increase in restoring force as the warp tries to throw the arm up.
Also, I've found the fixed cart mounting face of the wand is not co-linear with the arm axis. This means to get the actual VTA right on my At33ptgii, the arm angle is about 2 degrees below horizontal. Of course, this might not be relevant to others' carts, an in fact this characteristic of wand might not be a negative at all. I'm quite happy.
Back to what's important, how will the Thunder sound?