One thing to look at if you don't already have the SCWD is the new improved 1" SCWD. Take a look at their site...
http://www.3iqventures.com/oneinch.html
They have fixed the number one problem with these which was the lack of access. They have also improved flow. Pricing isn't bad compared to what we pay for most motion devices now in the hobby.
Just a thought though.