CTC 7 advice needed

[droptop]

Hey everyone. I’m looking for guidance with my CTC 7 so I thought I’d ask the experts. It’s fully re-capped and displaying a picture with a visible drive line. None of the usual horizontal adjustments will remove it. With the brightness control turned completely off I have a picture much brighter than it should be and out of focus. I found that all the screen controls had been turned fully on. After some approximate adjustments following the instructions good focus is still unobtainable even with 22 KV registering on the CRT. The set has new HO, HOT, damper, regulator and HV rectifier tubes. I’ve also replaced several resistors that were off value in these circuits. What I need is advice on what to expect the brightness control to do and where to start with the setup. I have the service literature outlining the horizontal sweep adjustments. Can or should these steps be performed with the brightness issue unresolved? Were the early color sets designed to go completely dark at minimum bright/contrast settings? Thanks guys.