--snip--
>But they do say that IF you convert to one of the approved
> alternate refrigerants like Freeze 12, you must follow procedures
> prescribed and also change one valve - I think it is the fill valve
> connection - back to that of R12.
--snip--

I must've missed that about the valve- can you post the section on that? It
seems counter-intuitive at the least.

Thanks,
Robert