Zvs royer tesla coil thing

You should get rid of one of your transformers. Also, you should always put some resistance in series with each winding of any transformer/inductors in a simulation. For example a high voltage TV flyback primary has a resistance of a few ohms and the secondary several k. The inductance would also be more like 0.5mH. 100mH is more like what youd get with a small iron core transformer on the low voltage winding. An air core SSTC primary would have something like 0.01 to 0.1 ohm at like 5-30uH and the secondary 20-200 ohm and 2-20mH depending on the geometry. Also remember to reduce the coupling (0.05-0.35) if you're trying to sim a TC.