Wow, thats the opposite of most people, but you never know... I'm sure you can tell better than we can about the stability of your unit. So go ahead and reflash with A02 and you'll be back there. Don't forget to apply some patchs to A02 such as the Palm beaming in case you want that functionality. Remember though that A03 fixed some HUGE problems with Pocket IE on the Axim. But if you don't need that, A02 will be fine.
Don't know if you have the A02 ROM update, but here is the download just in case you don't have it.
ftp://ftp.us.dell.com/utility/R58550.EXE