They are a very low end board. I do have one, but as for seamless... well... This post may cover something you already know, but the board has two modes for handling preset memorized scenes. In the first mode, the values of the preset are dropped when the new scene is brought up. (Anything BUT seamless!) In the other mode, the values are proportionally added as a second scene is brought up. (Only to the highest level on the highest setting) You can grab the manual off the Elation website.
So, on the off chance you didn't know about that, I hope I was of help