It looks like to me that changing HEX address L800D from 00 to 01 will change TCC to Manual. Am I correct?
Yes, it looks like that is the primary "manual transmission" option flag. Changing this will enable shift light tables and disable TCC apply tables and may enable or disable other options.

Other conditions that are likely to require extra attention are deceleration, deceleration to idle transition as Jim pointed out, rpm drop between shifts, closed to open throttle transitions.