I've used the EX1 on my Pilot for a couple of student films. Here's what I would suggest:
1) On the bottom, with the IDX batteries, use 2 of the larger mid weights on each side.
2) On the top, try to get everything up to 8 pounds. The mid weights are 1/4 pound each. The end weights are 1/8 pound each.
Looking around on the internet, it seems your stuff weighs:
• Sony EX1 (w/ normal battery, lens hood, and 1 SxS Card) = 6.25 pounds
• Manfrotto 577 adapter & plate = 0.5 pounds
• Sony VCL-EX0877 0.8x Wide Angle Lens Adapter = 0.75 pounds
If I've got this right, it totals 7.5 pounds, so add 1 mid weight on each side of the stage (top) to get it up to 8 pounds. If you're running without the wide angle adapter, you'll want 2 mid weights and 1 end weight on each side of the stage.
3) I've flown the EX1, EX3, and V1U, and they were all heavy on the lens side. In all 3 cases, I had to move the QR plate back one hole on the Pilot's top plate. See picture below:
This example is an EX3, but you can see how the QR plate is mounted much further back on the Pilot. It hangs off the back a little, but works just fine.
4) Set the battery position all the way back, as far as it can go. Set the monitor position pretty much all the way forward - leave around 1/4" or so to let the monitor swivel down before it hits the weights. See picture above. Always use the Pilot with the battery and monitor at these positions. When you do dynamic balance, just move the whole bottom crossbar forward or back using the hex nut in the middle.
Great! I seem to have everything balanced great!!! One more questions. As far as tension goes, how tight are you running with it. I found that I had to tighten the tension all the way so the arms would have slight inclines. Is this what you found as well?? Thanks for your help.