[TR] TR2/3 windshield problem

[Angelo Graham]

Hello Listers:
Happy Thanksgiving to all our American brothers.
Just having installed my windshield, noticed some wiper scratch marks 
not visible when the windshield was off the car. The driver's side has 
scratches that you can detect with your fingernail; the passenger's side 
scratches appear as more of a 'smudge' and don"t catch your nail when 
running over.
Has anyone tried the windshield polishing kits to get rid of these 
scratches? Does this polishing treatment really work?
I know the headlight cover restoration kits seem to work, but they are 
dealing with plastic. What about glass??
Another little set back along a very long, long road....
Thanks for any help with this.
Angelo Graham