Glad to sse you don't have one of those goofy multi-chainring bikes.
Free your derailler, your @$$ will follow I say. How's the tensioner/ guard working for ya? You mention spacers?
I was going to pick up a unit similar in design to replace my hand-built one- which is O.K..but only lower and I can only jump while in lower gears...

Schweeet curvy seattube> can you post an upright assembled pic of what looks like a kind of bike I might like? Don't know if I know what a Craftw- is?