Grandpa,
Thanks for the reply. My modem doesn't use UPnP, I've just got the PF set up & enabled within FrostWire.
One of my concerns was that while 4.9.37 Beta did show me as firewalled now & then, my uploads seemed to be as normal. With 4.10.0, they're way down but downloads are as usual.
I don't really want to just jump in & PF thru a different port if it's not going to make any difference. Lazy