Shermans v Panthers help

[phoenix]

Can anyone point me to a thread where there's help on how to best deal with Panthers? Or can anyone share their experience?  Shermans v MkIVs seems ok. In open terrain with roughly equal numbers of Shermans (mix of Fireflies and normal) I've been keeping the Shermans at least a hex away and slugging it out. The Shermans do ok, usually killing more MkIVs. But against Panthers if I do this it's disastrous. I have no Shermans left before I've even halved the number of Panthers. I can't, in the game, try to use historical tactics and move to get side or rear shots, because facing isn't modeled. So what should I be doing? Anyone help? 

Thanks!

Peter