no need to recap, just give it a slow start with the horz out and vert out tubes pulled, power up slow, monitor the B+, stop the variac when it gets to about 375v, check cans for heat, if all good plug in the sweep tubes, monitor the horz out cathode for current and do a full power startup. Don't be surprised if the cathode current is somewhat high, like 230ma IIRC. get it as low as you can but be warned the fly runs hot. upping the contrast makes it run hotter IIRC. Lowering the HV will lower the cathode current, but may end up with not enough horz sweep. Its a bit of an odd ball with the feedback HV regulation.
here is a video
https://www.youtube.com/watch?v=1vKzh33VaWI