I need to re-install the back glass in my heap. Not the original opening, and just the outside sheet metal, no lip, recess, interior panel or anything. Window is smaller than the opening, doesn't sit outboard, but I could cut another one.. Last time I had it in there I bought an aftermarket gasket from the local VW bug shop, was only about $25. Looked pretty good after I got it in there, but a year later the previously butted seam at bottom center had about a half in gap. No biggie but it had also cracked at one of the corners, which have about a 3" radius. There was no locking strip. Now I'm looking at this stuff online, made by Trim-Lok I believe. Anyone familiar? They have both a one piece locking deal and a two piece with a separate lock strip. Do I even need 'locking'. Also, will I likely face the same shrinking and cracking as the cheopo VW one I used before? I looked at the Steele website, didn't see anything similar.