I got a black lock bead you can have.
my glassman has a nifty screwdriver thing with a pointed loop of metel on the end of it.
you thred it through the end then use it to slide in the groove to open it laying the round rubber lock bead right in the groove as you go.
used dish soap and a food grade spary oil working on the rubber gaskets/windsheild/back glass of my trucks.
I put a couple solid back galss in and did the gasket on the glass then sitting it in the hole working 3/4 of it in then roll the last bit of the gasket around the upper corners by hand inside the cab with a plastic/nylon flat stick. (looks like a flat wooden carpenter pencil) wood paint sticks come in handy also.
just go slow and easy
shoot me your addy