For one thing, the structure of your loops is overly complex. You have:

OUTER: while( ... ) {
       ...
INNER: if ( ... ) {
        ...
        redo OUTER;
       } else {
        ...
       }
}
[download]

'IF' is a branching construct, not a loop, so you don't need the labels to do this. Restructure it to:

while( ... ) {
  ...
  if ( ... ) {
    next;   # <-- next is all you need
  } else {
    ...
  }
}
[download]

This might actually fix your problem as well....

-Blake