There are certainly several ways to skin a cat and in the past I spent countless hours mixing out trim problems. I was mix mad.
Then I listened to Byrans methods and removed the mixes, moved the CG considerably further forward, increased the incidence to compensate and it was a revolution IMO. Sure there was some small issues that could have been tweeked further (I just added some slight mixes back in, well I was an addict) but the aircraft and it's performace where just simply, transformed.
How much time was lost chasing a model simple because the CG was to aft beggers belief!