The SVTX GP10 had a major problem with the reverser, not to mention it needed new wheelsets, thus they sent it to P&W for repair work. On Fingerlakes Railway, 1855, then 1801, had problems operating in tandem with the other units so P&W may be attempting to debunk these problems by pairing it with 2215. To my knowledge SVTX has never operated their own locomotives in tandem. When the PW 3001 came to the property it was for a short time MUed to SVTX 5, however I don't believe 1855 has ever operated in a consist with 5.
Did we ever hear a music sweeter than the one that thrills, as it floats along the Deerfield, as it echoes o'er the hills.
How we watch that little engine as it stalks across the plain; was there ever music sweeter, was there ever sight completer, than the coming of the train?
-E. A. Fitch