So my RF door glass felt loose and I thought for sure it was the regulator, so I ordered one up along with a new weatherstrip seal 
Turns out the regulator itself was fine and the glass had slipped out of the rail
Now, my glass guy had replaced the window back when they tried to carjack me and from what I found, there wasn't any glue residue in the flat seal
I slipped it the rubbed back into place along with the rail, but it just doesn't feel tight enough to hold it in place (I'm able to pull it straight off)
Do I need to use some kinda glue or silicone on this
All the other regulator jobs I've done had either bolts or solid locking retainer clips to hold the glass in place

Turns out the regulator itself was fine and the glass had slipped out of the rail

Now, my glass guy had replaced the window back when they tried to carjack me and from what I found, there wasn't any glue residue in the flat seal

I slipped it the rubbed back into place along with the rail, but it just doesn't feel tight enough to hold it in place (I'm able to pull it straight off)
Do I need to use some kinda glue or silicone on this
All the other regulator jobs I've done had either bolts or solid locking retainer clips to hold the glass in place
