I have a need to make a sliding shelf that will fit in the space underneath a computer desk where you legs would normally go. It would be about 24" wide and must support the weight of a guitar amplifier that weighs about 35 lbs, and which would slide forward about 10 - 12". The slide system must of course be able to support this weight when the shelf is extended as well as when it is withdrawn. Can anyone recommend a slide that would accommodate this?