Hi! I have a Mesa/Boogie Bass 400+ amp and I'm looking for transport/protection. It doesn't get moved that much, so light protection would be acceptable. I tried mounting it in a Pro Stage Gear 6U rack, which was nice, great construction and protection, but the amp is a heavy beast all by itself, so I was thinking about changing to a rack bag, and downsizing to a 4U to help save weight. A lot of the 4U rack bags I've seen have the amp facing forward while carrying it. To me, it looks like this would put most of the weight load on the screws... wouldn't it make more sense to have the amp facing up so the weight would be on the rack? I think Gator makes one like this.... I was also thinking backpack straps would be helpful to distribute the weight on two shoulders... Does anyone know of such a rack bag or must I design and build it myself? Thanks!