|Newly-mounted WickWerks 50/34 compact road double chain rings|
I clamped a laser to the downtube and spun the empty crank, and if it's out of flat it's by a very small amount. This is pretty strictly down to me pushing too darn hard at this point in time.
There's a 50/34 set of Surly stainless steel rings coming for the Experiment, since I have some hope those will last without bending. (They will likely also shift like urgh, but everything is tradeoffs.) And the Experiment is what I'd be riding if the particular horror of being sixty kilometres into a planned three hundred kilometre tour when the big front ring goes non-serviceable happens. (And, hey, last time took out the small ring, too, nearly; enough top ring bend to interfere with any gear but least and next-least.)