Unfortunately, the OlyMEGA forum is currently down for upgrades. I took apart a bunch of old CFLs and scavenged toroids out of them, and wrote up with pictures how to properly phase the coils.
The dots are for transformer phasing. With a bifilar winding such as you have there (ie, the two wires are twisted together), the matching ends will have the dots on them. Basically, when an AC signal is on the positive half going in, the same end of the secondary will also be on the positive half.
From your picture, you have the windings connected correctly.