Yeah...remove the springs first and go fly, but then set the trim indicator properly. ASSUMING the electric trim motor was installed correctly, using accurate measurements and such, run it all the way out, mark the actuator, run it wall the way in, mark the actuator, divide by two and mark it and set it to that. THAT is centered. Then later, when you reinstall the springs, make new connections from safety wire (I'm assuming this is the same as the -7 electric trim installation) and follow the instructions.
You need to eliminate variables here, and start from a known, defined, simple baseline. No trim springs, ailerons properly rigged, etc.
Here's another one I didn't think of until just now...you may have already. After rigging one side, *lock it into position* and rig the other side. That is, don't let it "float" while you adjust both pushrods for the *other* side.
It may be too late now for simple solutions, though...looks like you've been messing with raising and lowering the aileron brackets, squeezing and "unsqueezing" trailing edges, etc. You might have so many things changing you're now "chasing ghosts".