I run my UA-5 in a sonicase. I took two small pieces of wood and basically made stilts, so it sits high enough so all the cables fit fine ( I don't even need to use right angle cables) under it, it is high enough in the bag so all the knobs and buttons are level with the dividers of the bag, and so that it is as wide as the sonicase, so nothing falls down between it and the bag. They are held in place with 4 strips of gaffer's tape so it was cheaper and easier to do than building a cage from wire shelving.
I've had the bag over a year, and the only time I had to replace the tape was when I sent the UA-5 back to Oade for a mod, so I know it is sturdy.
JAson