55.2-59 1955 chevy truck door glass channel rattle

[MALIBLOC]

I installed everything new in my doors and its seems like the Glass Channel rattles, and its bugging the hell out of me. I soundproof everything in the cab and installed all new everything but the rattle is constant and annoying.
Im going to open the door today and I was curious , has anyone ever glued the channel or maybe squeezed a drill in there and put a screw thru the channel to set in place. Its snug on the top part of door , but where it goes straight down to the botton, I believe is loose and not properly seated in channel

Just looking for options, thanks