My 300 px SWF is only displaying about 200 px

I am tearing my hair out. I started with a great water filling animation on Flashkit that was only 200px wide. It is old, Flash 5, AS1 & for the life of me I can not figure out why the stage is being cut off when I widened it to 300px. The only AS is

duplicateMovieClip("_root.drop", c, c);
setProperty(c, _x, random(10)+50);
setProperty(c, _y, c*-1);

on frame 1 and

if (c < 261) {
c = c+1;
} else {
c = 0;

on frame 2.

FLA attached