windshield install ...

We got the back in - the front ain't so easy. We can set the glass into the bottom groove and get the gasket around the glass about half way up on each side, after that it's too tough. Gasket is set in place, using plenty of WD40 and plastic tool used for this purpose. Should we try using some type of cord in the groove and possibly pull the gasket out over the glass ? If you've done one - I'll take all the advise/tips I can get.