Sorry I'll have to disagree with that. Ephry over at RWG and here was one of the first ones to fit a Yuki 3135 in a BPSD case, and the case he used was a 2836- 2 BPSD case. Later on I fitted a gen 3035 I'm this case myself..I didn't like the engravings of the serial number and markings, but that is hidden by the band.
I don't know if a SD is the same as a sub but a 3135 can't go in the 2836 case (if it is the same as the sub)
So the modder that put my gen 3035 I'n my BPSD case said he had no problem fitting the movement and done very little to get it mounted. I have always heard the same tell as you have. But in this case its simply not so. Maybe @ado213 can tell use as how they can use a 2836 in a case that will also take Yuki or gen movement??