I put new seals in too and the windows struggled. Replaced the switches and new motors huge difference! The new motors work much better then the old ones.
Make sure your vacuum Advance is disconnected when setting timing . Unhook the vacuum line at the distributor and plug the intake side of the hose with a screw or something.
Here is the gasket with the trim grove and after the trim is installed. If you don’t want the chrome strip Wich is very hard to install just get the regular gasket