To recode or not to recode that is the question

I've been learning python at work, the programming language not the snake :-) I've been using python to keep our Informix database synced with our new mysql database. I have learned a lot through the process and I do have it working. However, if I had it all to do again, I would have written my code differently. The question now is, should I take the time to rewrite something that is working great, to write it *correctly*. I sure programmers in *ages to come* would appreciate it written correctly.