Charlie, if you noticed I am using much thinner wire for my secondary windings...#36 and it only takes about 21 feet of it to complete 450 turns.
My primary is #26 and evenly spaced..secondary is even the first time around the core, then kind of scatter wound till I hit 450..really works well for me..tried evenly wound 450 and gained nothing, so in hopes of repeatability, I do it the same for every one of them now.
I also solder insulated leads on the ends to prevent breakage, wrapping them with tape a few layers around the core. Haven't had any shake loose even when mounted beneath the engine block. Either way, the newest board Rob presented now is underway..etching and will drill and mount components to at least one tonight sometime. Testing tomorrow.

John