zenith porthole question

[stusnyder]

I picked up this h2439r with chassis 24h20 right before we moved. Removed crt and chassis on site to transport. Just got it together this weekend. Only got half a picture. Where to start, I'm assuming vertical section? Got 1 vertical half frame. Thought maybe it was yoke or crt was twisted up or down, but both the yoke and crt are in a fixed position. Vertical size adjustment does not stretch it all the way. Horz. and vertical do lock. I have not messed with any tv's for over 2 years and am rusty. Could use some help....