Which butyl sealer for back glass?

I finally got an undamaged back glass for my '72 Swinger. I put 3M Bedding & Glazing compound #08509 between the glass and the gasket, fit it to the glass, and poked a small nylon rope into the body groove of the gasket. So far so good.

But should I lay a bead of the same stuff on the pinch weld all the way around? Looks like it will make an unholy mess when the rope is pulled to the inside of the car. I've read that strip caulk or butyl tape are options but may be too fat to install easily.

Any hints or tricks? I've read lots of threads on this install but few address the issue of how/where to apply the gasket-to-body sealant. Thanks :)