I've got a powerkings PK-80, and the box with the chain shows DH 083-110L. And within a bunch of chinese is a 50. Is this an actual chain size? The reason I'm asking is that I saw a bearing-ed sprocket I want to use in place of the chinsy plastic idler wheel. In Northern Tools's go-cart section is a sprocket for a #35 chain that would work great if sized correctly.