Rivarossi DCC upgrade

[nw-modeling-list at nwhs.org]

I have had less than satisfactory results with the two Y6b's I tried to 
install decoders in. Admittedly these also probably needed remotoring, but 
neither one of them works worth a flip. I have three more - one newer 
center-motored unit and two of the older units. These are all good runners 
but after the fiasco of the first two I am loath to try again. Anyone have 
any advice for me, or the name of someone in the southwest Virginia area who 
is a reputable shop who can assist me in this adventure?

Bob Welsh