If the window channel is like mine in the 53, and I'm pretty sure it is, you can snip the sides with your handy angle cut pliers. then snip the rest. as for the rivets, you need a helper to hold the dang thing still and use a big pointed nail for your first lick to get the rivets started folding out in the right direction.
OH and don't hit them hard. just lightly n you will get a feel for it pretty quick
Last edited by 53monster; 08/14/2009 7:34 PM.