Digital BW, The Print

I tried to order UT-RC inks for my R260 from MIS and could not.
Mathew informed me that they no longer carry this ink.

Are any of the UT14 inks direct substitutes for the UT-RC shades?

Since the UT14 ink set only has an MK, what could I use for a PK?

Are there any formulas for mixing UT-RC myself?

IF
 none of the above are viable solutions.
AND
 since the R260 has been described in other posts as a small 1400.
AND
 since QTR only supports the R260 in Black Only mode.
COULD
 QTR be tricked into thinking the R260 was a 1400?
(i.e. select 1400 as printer in QTR but have R260 connected.)

If so I could then load the R260 with UT14 inks. If not ?????!

Thanks,
Cliff