I have read other threads here that the round clips that come with the door fuzzy rails that are suppose to pop into the holes in the door do not work. I found this out first hand a while ago, they certainly are crap and I don't know how they can sell this stuff as they must know they don't work. I bought some clips off E-bay that do work, put then in today no problem and they snap into place.
They came from American Muscle Car LLC looks like it also has a web site Vintage Auto Parts | Classic Ford, Buick, Chevy & Cadillac Parts.

 

Got the auction link?

 

Here it is

http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=290862074529

 

They are the same clip for alot of years, the ones listed fit my 52 moulding perfectly.

 

Thanks! Those appear to be at least twice as thick of metal as the crap that comes with Dennis C, LMC, et al. Maybe even real steel, not old tuna cans! BTW I almost ordered off the Canadian eBay site, here's the US link: http://www.ebay.com/itm/Ford-35-36-37-38-39-40-Garnish-Moulding-Window-Channel-Punch-In-Clip-25-Pcs-/290862074529?pt=Vintage_Car_Truck_Parts_Accessories&hash=item43b8bb0aa1&vxp=mtr