Door glass size problem

[Tim64]

Hey All,
I’ve got a question about the size of door glass. I got my truck as sort of a basket case, and a lot of stuff had just been thrown together. The door glass is one of these. The regulators seem to work fine, but with the glass sitting down in the track in lacks about ½ an inch of going up all the way. I know there is glass tape that goes into the track the glass sits in, but it’s not going to make up the difference. So I’m wondering if I have the right glass or what. The overall height is 16 7/8 “. I was thinking of just buying some new glass and having it cut ½ “ longer. Do you guys have any ideas? I could sure use some help with this one.
Thanks,
Tim