It may well have been mentioned elsewhere so apologies if this is a repeat. I think before you take the wings off it is worth reflecting that there are two purposes for bolts in the centre section.
i) bolts which are tying the two spars, L and R ,together, to make them into one.
ii) bolts that are there just for the purpose of carrying the weight of the fuselage on the spar. (Of course, before everyone howls, all bolts do a bit of this, though my guess is in the design, only 4 are primarily responsible.)
I mention this because the bolts role I dont think is widely understood. I certainly missed it at first. They are the 4 off .25" bolts neither along the top or bottom of the spar, right out against the side of the fuse. 2 each side.)
You can just see the heads of the upper ones, L and R, if you double click on the first of the pictures you will find here. Just above the level of the floor. The lower ones, vertically beneath, are not installed.
http://gikonfuse.blogspot.com/2007/02/control-system.html#links
I mention this because as you disassemble you can reduce the way that unintended stresses flow.