Take your V2 out and compare it with the ve-1, it's a huge different.
As you can see, now that the crotch hatch on the ve-1 has same width as the landing gear, so it means that you can open the crotch hatch hinge as picture shown here, put the crotch in and close the crotch hatch. It's pretty much the same mechanism like the 1/48.
The point of this new crotch hatch is you don't have to force the crotch at one angle to slide it in with the crotch hatch anymore. All you need to do is put the crotch in and close the hatch.
The didn't change the crotch, they just change the hatch U shape, which makes it larger so that the hatch can be closed whent the crotch is set in place. In other words, now the U shape has bigger room so that the hatch can bypass the crotch swing bar when it's in place.
Do you understand?