Dynamat Installation

[gag1025]

I am going to install Dynamat inside the door panels on my 1953 Chevy truck. The problem as I see it is that there are two small openings in which I will need to get each strip into and use the roller to secure each piece onto the door facing. Any hints that may be of benefit doing this? Don't say get a very skinny arm person to do this. I don't want to cut the door facing out because to me this would make the inside of the panel very unstable and create more problems than it solves. I di think about cutting an 8" - 12" section out all the way across in the middle, but if this can be avoided I would feel better because I don't want to do any cutting unless it is absolutely necessary. I am going to use ABS plastic to make a full door panel. I would really like to hear from as many of you as possible who had the same issue and solved the problem. Thanks for your support.