RCA CTC-16XL Suggestions/Tips

[Rocket]

Hello! I thought would ask the pro's of any suggestions and tips for my RCA 16XL. Is there is any must/recommended do's or things to look out for? It is in fairly good shape, looks to have very little work done to it and mostly original condition. The CRT tests really strong on a CR70 and has a great color picture. The flyback looks to be ok and does not have any leakage under it and that's nice to see.
However the vertical is a bit outta wack and no way to fill screen without stretching the top. Horizontal is close with the control at its max so I suspect I need to be checking out them sections for drifted components.

Also, is there a way to protect the flyback from melting down or failing? What kind of failure usually causes this so I can keep a look out for that. I thought a while back I read that there was a way to fuse it to help protect them, but for the life of me I cant seem to find where I read that at.

I'm excited to get this thing going Looking forward to watching Star Trek the original series weekdays on broadcast

I just want to say thank you to everyone for your input and help!