Well,
I have seen the 25 inch tube being driven by a WG 19 chasis set up, the
defelection was adjusted in pretty close, but still much larger than a 19".
Judging from the amount of dust, it had been working for quite sometime.
It shouldn't be too much different than using 13" B/W parts in a 19" B/W
mon. I use them pretty much interchangeably with no problems so far....
Bill