Paul
There are a few differences between the Laguna, and the "original" Performax. Chiefly, the support bracket on the open side of the stand. Can it be removed to make the sander a 16/32 as the Performax was sold as?
There is one misleading statement in Laguna's brochure that you linked to.
The Brochure implies that the max sanding depth is 1/8" . I can almost guarantee you that if you were to try and sand off 1/8" in a single pass with the sander it will trip the reset on the motor. I believe this may be the minimum material thickness spec.
You will find that once initial drum contact is established with the material, you will rotate the depth handle a max of 1/6th of a revolution.
I'm interested to know how that additional support works out.