[jrblasde]

A keen observation! Thanks, I will give that a try tomorrow. I had started with short leads when using the coupled inductors, but moved the individual inductors further away due to the increased footprint. I will reposition it all.

Might not hurt to get some smaller inductors on order. Using, say, a 2.2 µH or a 3.3 µH inductor will give me some more breathing room to upsize the capacitors. This should help limit the effects of parasitic capacitance.