What I wanted to do was loosen the lockring enough to allow any foreign crud inside the freewheel to be flushed out.

I haven't loosened the lockring yet but today I bought a can of WD-40 and gave the freewheel a good soak as I turned t o body once it was unseized. Tomorrow I'll check and see if it's seized again. If it is I'll loosen the lockring and flush the freewheel out again. If that doesn't cure the problem I'll open it up and see if I can flush t he stuff out. If that doesn't work I'll then disassemble the freewheel completely and rebuild it. I've take apart and reassembled many freewheels over the years. It can be done with care and patience. I've always found that the trickiest part is getting the pawls to slip into the notches as the thing is being reassembled and i have a t echnique that make that a lot easier.

Shipping at a post office here in Ontario Canada is based on size or weight which ever is greater and it's not worth it to send a freewheel to the U.S.A. for repair and return.

Right now 6-speed freewheels are very scarce here let alone a quality one.

I have this thread bookmarked and will let you all know how I make out with this.

Thanks and cheers