Ok here is my first technical post so please be gentle. Ok I jumped into the drsstc thing from spark gaps. Although a lot of things are similar there's still a hell of a learning curve but if I can figure out these little quirks i know I'll be ok. So im running the cloud leopard driver from China which was on a whim from banggood for like 30 bucks with the interrupter. The GDT is humming along switching a half bridge of 1MBI600PX-140 igbts both have 2kvdc 2.5uF fabmika caps sitting on the bricks. Two 350v 4200mfd electrolytic caps in series run voltage doubled.  Of course TVS to block any surge. My MMC is 9 series 2 parallel of Cornell Dubilier UPP10W3P3K 3.3mfd 1050vdc caps. So 9450v at .7333uF and I have 9 more if needed to do 3 strings but they have never even gotten warm when just running 1 string of 6. Here's now my dilemma, I can't get this coil to go be past 2 foot arcs. I have tapped and tuned to the best of my (limited) knowledge and it's maxed out. I'm assuming with this setup I should be able to get some good arcs? I used a scope and got my fres of about 58khz and the adjusting it to about 49khz I get 2 foot arcs. Now here are the noob questions(sorry ahead of time). For the life of me I can't get feedback to drive the damn coil. So I'm using a signal generator to run it but even with as much as I'm pushing into this coil 2 feet seems really small... Any input or silly oversights on my part are highly appreciated.
Thanks, Courtney