Where can I find more information about programming/settings of the 4L60E tranny tables in the PCM?

I've got an LT4 and 4L60E tranny in my truck and have been adjusting all of the Main Line Pressures, TCC, and modifiers until I have it feeling pretty good, but it still feels loose at the higher rpms and I think there may be some more inprovements to make, but not sure how much I can adjust without burning up the tranny. Stock 4L60E setting that originally came in the truck TBI motors PCM are way too loose, but the stock '95 TA PCM settings for the tranny are close and thats what I have varied so far to get it feeling good and shifting at the right points etc. Main line pressures have not been altered too much from the TA settings.

Thanks