Beaky - I finally looked at your cart and it seems as if it would work for many of us. My concern is that I would still have to tilt the truck to roll it. My keyboard and case are almost 50" long and weight 60 lbs. Start adding the weight of my other equipment and pushing or pulling that load on an angle is about as bad as just wheeling the keyboard as I did before the r10. The handle of the Clipper 90 would be below the height of my keyboard and that would make it difficult to use the cart effectively - 4me.