Yes, I have the same question as luker737.  My Aeromax manual is prettyuseless (it really really  is BAD, but at least at first observationsthe model isn't too bad...just hope the glue used holds.  I actuallywas impressed with the fit for a cheap bird.).  On mine its a 69"wingspan J3 Cub scale (or so they say) and since I'm too much of arookie to know better.... I do think it will work out well as a firsttrainer.  When they say throw at 3/8" or 1/2"...is that a difference ofthe trailing edge from neutral or is it from max deflection from bothupper and lower positions (as in an aileron)?   Seems they should givethat setting in degrees of rotation... then the scale wouldn't matter.

My J3 instructions says nothing on the matter.  For a starting point onthe aileron I am considering + and - 15 degrees or a total throw of 30degrees... would this be close?   Likely + and minus 20 degrees on therudder?  Slow larger trainer remember.

Thanks
Dave