Jason,

You mentioned differential, 5 degrees on the Ailerions with a meter not % in the transmitter. It will bring the rolls right in. You may want to cut down on the rudder for IMAC snaps. I think that and the Diff will bring the snaps right in.

The Yellow is Pearl ultracote. you may want ot contact Horizon and see what gives if your having a hard time cleaning it.

Enjoy and get us some pictures

AL