new door seal installation

[cjoenny89]

I am installing new door seals that mount to the cab. This is being a pain in the but! Is there a good way to do this? I tried starting in the "square" corner and taping it in place but it keeps pulling down. What is the proper way to glue the seals into place? can you just use a silicone? I can get all the scrap silicone I want from work. what have you guys used and have you used masking tap to help hold it into place while the glue dries?
Thanks
Chad