Thanks, [MENTION=38510]Scooper[/MENTION] -

I think my seat tube may be far more steep than yours, but since the manufacturer doesn't post their frame geometry, I don't really know. Back in the day, I brazed my own Reynolds 531 frame with 71.5 degree seat tube and head tube. I wish I still had that one...

As for my Kona Unit, problem solved. I'm turning it into an upright bike with a sprung saddle & sweep-back bars. Fit will be far less critical.