Try the oil pot, it can be a bit annoying to put together. Try to reduce friction in the moving parts, your forces are more accurate then. Sorry, that's all I got.
I've seen people do it and yeah, would approach it like segmented scales, but just from a knife philosophy standpoint I was wondering whether people would think it cheeky to do. The linked knife by Taylor looks good, and what I was thinking for a fulltang...