Make sure the shop fits your windscreen assembly before they go much further with the restoration. Looking from the front of the car, the gap between the windscreen frame and the cowl should be equal on each side. If it gets bonded on before a check is done, then you have no way to tweek the fitting.
Also the rubber seal along the bottom of the windscreen frame must be put in with the upturned side facing down,,,,yes it sound like this would be the wrong way.
Look at a few photo's and if you see a rippling on each side or one side of the seal as it follows the rounded edge of the cowl it's been put on the frame wrong.
Johnb