Installing Inner Windshield Weather Strip

Before I attempted to install the rubber inner windshield weather strip I talked to Carl Walck, from whom I bought it.  The strip is one piece  --  U-shaped.  He said to feed the long side into the notch, sliding it along until I reach the end, then feed the short ends into the notch and slide the weather strip into place.  Sounds easy!  But, I've spent the last half hour doing that with very little success.

The groove was scrapped clean, primed and painted so it is smooth. I doused the groove and weatherstrip with soapy water before feeding it in.

What advice do you have?  What has worked for you?

3/16" or 1/4" glass?

Mark,

I'm not installing the windshield glass: That comes after I get the weatherstrip that goes around the inner windshield frame installed.  But since you asked, the glass is 1/4".  I got a rubber strip which is continuous.  Walck's said it could either be cut into four strips with a 45 degree miter at the corners or a 45 degree miter cut at the corners before folding it around the glass.  What has been your experience installing the window glass?

He's not installing his glass. He's doing the rubber between the windshield and the frame. 

I found that a plastic putty knife was helpful. Like others said keep it wet and work in one edge, then I used the putty knife to carefully squish the other side into place. Be careful or it will pinch and cut the seal. I cut mine into 3 pieces with 45's in the corners. It is a pain to do, so be patient. 

The reason I bring up the glass is that it has been mentioned in the past that the original glass was 3/16" thick while most replacement modern glass is 1/4" this makes installing the stock type rubber near impossible.

I personally have never even owned a 2A windshield my Willys has a 3A windshield which I am going to have a couple of Kids I have known since they were in high school that now have a mobile glass co install mine. They do all of our dump truck windshields at work and all sorts of other auto glass.

Update to my question about installing the weather strip.  I took the advice to cut the one-piece strip into three segments, lubricated the slot with dish washing soap and slid the pieces into place.  Of course it wasn't quite that easy, especially for the long strip, but I did manage to get it installed.  Then I began tinkering with installing the glass.  With 1/4" glass the rubber U-shaped gasket material, purchased from a well-known Willys vendor, was too thick to work.  Again, taking your advice I began calling around to find a glass shop that would install the glass.  And, to my surprise, I found a shop in Wichita that knows the CJ2A inner windshield frame, and they have done this before, and they have gasket tape to mount the glass.  I'll deliver the frame and glass to the shop in the next few days.

Thank you to all who responded with good advice to my question.