RE: Expos for 3D flying
on my low throws i have my flying around comfortable throws, and on my 3D i have the throws maxed out and have my expo set at 60% on ailerons, 75%on elevator, and 0 expo on rudder.
these are what i use on my ucd 46 and somewhat close to what i use on my other planes but your personal comfort level may differ a little.
good luck!