135 is for 3 1/4 x 4 1/4 negs. People get away with it for small prints because the lens is further from the neg.
Condensers rather than diffusion makes it problematical also.
Set your condensers for 4x5 or 150mm.
It also depends on the exact lens. I use a 135 comparon on my D2 and it works as well as my 150.
Condensers do not work well with any wide angle lens design. Do not buy one.