Loop vs long version

im having a strange problem, i have a Main class and a other class called Calc
everything seems to works when its written fully written but when i condense it into a loop, behavior becomes different and broken

posted the FLA and Class

heres the working version
http://www.2020proj.com/media/code/calc_long_working.zip

and the loop
http://www.2020proj.com/media/code/calc_loop_error.zip

im trying to get the loop version to behave just like the written out version, if anyone has a chance to look at it, greatly appreciate the time