LM5046: Driver deign questions and schematic review.

I have an active design for a ZVS driver using an LM5046. We are using it to drive a high voltage transformer stepping up 28 VDC into a 1:600 transformer producing about 24 Kv p-p. To sense the current I am using a low side sense resistor 5 mohm with a Kelvin connection to an op amp with a gain of 15. I want the current set point to be 10A. The signal into the CS pin shows a very fast transient exceeding 0.75 volts as soon as the bridge conducts and we believe it is terminating the cycle early. I would like someone to review this circuit design to see if I have implemented this device correctly for this application.