When you have your pier bolted onto the j-bolts and your piertop attached to the top with your GEM mount attached, you will only be able to use your azimuth fine adjustments to polar align your mount. Usually these are +/- a few degrees. Some pier tops have an additional small adjustment, I don't know about the Omega 2. It is important to have your j-bolts set pointing the right direction so you can polar align your mount. I can't tell if your pier is going to have 3 or 4 j-bolts. If yours has three like mine, then you need to have one point of the triagle they form pointing as close to true north as possible. Since your mount looks square, you may have 4 j-bolts where I would think you would need to have 2 j-bolts perpenicular to true north. It just depends on how much wiggle room you have to determine how precise this needs to be. I polar aligned my mount and used string attached to stakes to mark the direction to true north, and had the string stretched across my sonotube. Others have used a compass knowing they had enough wiggle room to account for the difference between true and magnetic north. I have also seen a compass at REI that has a declination adjustment to account for the true vs magnetic north,
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