CBN wheel too big for T4 water trough

[Scotty]

As a famous commentator once said "now, for the rest of the story".
I now have two Woodturners Wonders CBN wheels for my TormekT4 - yea!
I even managed to expand the arbors to fit the T4 shaft (that's another story).
So here I go on my inaugural test run. Plan is;
a. Several runs on the SG 200 (at 220 grit)
b. Several runs on the CBN 600 and 1000.
c. A couple of passes on the SJ200.
d. Angle guided honing on the leather wheel.
EXCEPT, the CBNs, which I planned on using with a Honerite mixture, are too large (by a couple of mm) for my water trough.
I ground off the small protrusion on the bottom of the pan - to no avail.
I called the Tormek folks hoping to find a deeper pan, but they told me TS, do not use anything but Tormek stuff on the machine.
I would be happy to, but they do not make what I need or want.
Would appreciate any help.
I suppose I could get a T7 or T8 ($$$$$$$) and try the smaller wheels on them, but was trying to keep expenditures down.
Thanks