I have been updating some models recently from SW 2007 to SW 2010 (due to design changes with some of our standards). These models have a fair amount of pneumatic routing assemblies in them and they are very unstable. I realize that I haven't given many specifics, I'm just curious if anyone out there deals with or has had any issues with routings (most is 1/4 od flexible tubing). Any little tips or tricks would be most helpful. Thanks in advance for sharing.