Many yrs back I attempted a convert top replacement and it isn't as easy as one might think - if you wanted it tight with no wrinkles. But then again, it was a JC Whitney top so I assume that could have been part the problem. I ended up having a "professional" do it and it still had wrinkles. I was young
and stupid
then and just let the issue go when they be estd me that it was "normal or somethin'".