I have 3 years on my Model 7 and no leaks about the windscreen.
The butt ribs, aft portion of skylight, and inside door frames used the black tape with peel off backing that came with the kit. Windscreen goes inside the vertical doorframe. My windscreen goes inside the bootcowl and I used two separated layers of 3M "strip caulk" part #08578. Torquing down the fasteners will squeeze out the excess and it's easy to clean up.
Like everyone else I probably had the windscreen on and off about 30 times to get the fit right. Keep it warm...
Any more questions I'm sure you will re-post. JeffB