The mark 1 had some components that needed to be reused in the mark 2.

-4x 2000 uF 450V caps
-300Ω 60W resistor used to drain fully charged caps
-600V 30A Thyristor GE B1589142
-Coil mark1 with 2x MUR860 diode and 0.56Ω 5W resistor

Also the mark 1 PCB that I made without any knowledge what all the components did. With the beauty of 3 parallel diodes soldered on each other.