Yes we dig for data thoroughly since we really want to make the flightmodels performance as close to history as possible. Grumpy for one has almost more books, manuals and data collected than a library
. All feedback is more than welcome though since, as Grumpy wrote, we might always have made some error when going through all the hundreds of parameters of code that builds the flightmodels. Actually your post made me find an error, the Spit IXa should have the same Shilling's Orifice cutout settings as the Vc, but I just discovered that I've mistakenly given it the same neg G's settings as the Spit IXe. This will be fixed in the coming update that features full remodeling of the Ki-43 and the Ki-44.
<S> and all critique + feedback is always welcome regarding the flightmodels