"The capsule C caused me one bout of mild diarrhea at mega dose levels, but so far the liposomal C has had no bad effects at all, only wonderful ones."
This suggest you reached Gi tolerance levels as the body will rid excess Vit C through diarrhea which is a point where one can back off on Vti C to where you don't experience this effect. That's a good thing...your body is storing/using the Vit C you have loaded up on.