CW SSTC

Some people been asking about this coil's circuit, you're welcome. :P https://i.imgur.com/JNC3pLz.jpg P.S. One of my pals demanded it as a birthday present, I couldn't resist adding details. xD Sorry for shaking hands, i'm a bit tipsy right now because of isopropyl and 646-solvent vapors i breathed right before testing of this new coil(got some troubles with epoxy dissolvation after one accident...). This is 580 kHz coil, half-bridge, based on really cheap and poor FETs(IRFP450s), pure CW SSTC, powered with 268VDC(well, it's powered with 310V, but i need a bit MOAR capacitance in my filter). Bush's height is almost 1:1 to the secondary(16 cm high),i really surprised that there was no blows with so weak MOSFETs! Also, it's all UCC37322 based, cause i can't get UCC37321 for making classic driver circuit.