Barb,
I have the same system you have, so far so good and pleased with the Scrollnado. Now, it is not as good as the dust collection system many of our scroller friends and family have. They have built their own or have purchased upgraded systems. A couple of things that may help you is the vacuum you are using. Mine is a very cheap vacuum that I purchased at WalMart. Not very powerful but does OK. The other thing, you may have done this, is that some of the small pieces were sucked up in the tubing plugging it up, so suction is reduced. Result, sawdust falls to your cloths. What you have to do is a little maintenance. Undo the tubing and blow out the pieces stuck in the tubing. Sometimes just a good shake and the pieces will fall out. The main problem I have is the top tubing doesn't want to stay where I put it. When that moves, doesn't pick up all the dust. Sometimes the wood you are cutting creates sawdust that is kind of sticky and that is, I think the vacuum won't suck it up. I do most of my cutting with hardwoods and noticed the system can pick up the sawdust from hardwoods much easier. I have noticed the Scrollnado has a more difficult time with cedar and plywood. One other thing I am thinking getting a more powerful vacuum. Hopefully you understand what I'm saying. Many of my friends tell me, "Jerry, you are always talking but never say anything.". That said I close. I like reading about your projects and comments.
Jerry