See the RV12 Modificaions sticky thread for detailed pics of how many have split both the bulkhead and the floor plate.
http://www.vansairforce.com/community/showthread.php?t=64145
Do you have the part number or did the person you talked to know what you wanted?
This is what was sent to me from Gus at Vans (who is very helpful, and patient).
"The rear bulkhead remains the same. What the change is, is the panel
on the baggage floor is split so half can be removed to inspect the
flaperon controls. The upper half of the rear baggage compartment can
be bent forward to allow inspection of the tailcone interior without
removing the tank.
Parts for this are F-00081 $8.70 & F-00082 $6.70, which replace the
old F-1206E, see attached."
Bear in mind, I have an SLSA.
And this one, even beefier...
http://www.vansairforce.com/community/showpost.php?p=662634&postcount=166
F-00081 "floats" at one end. Is there another bearing bracket for this. Does anyone with a later kit have a drawing for this arrangement. The absence of an update drawing from Vans is a little frustrating. Am I missing a piece?