Windshields

I'm not sure if my car ('72 Swinger 2-door hardtop) is supposed to have a locking strip or not. It was completely disassembled when I got it...

With the rope install method I suppose the gasket-to-body butyl has to be squirted in after the glass/gasket is fully seated? I've had too many windshield leaks in different cars to go without sealant...

If the gasket is installed on the body first, should I squirt the butyl into the seal at the time of glass installation, or afterwards (lift up the lip of the seal and use a needle tip, as someone posted above)?
I guess you could do it that way. The caulk gun stuff can be quite messy but will clean up with mineral spirits, laquer thinner... We used windoweld ribbon caulk on his. stuffed it into the gasket before the rope. I used that on the other gaskets to metal also. Everywhere except under the front one. I did my front glass with ribbon caulk under it and had to re-do it cause it leaked. That gasket is just laying on the metal shelf, not wrapped around a flange. The liquid in tube seals much better there.