It sounds to me like the rubber tape you have is too thick. Also, lay it in the sun to make it plyable if it's rigid and use soapy water on the rubber as well as the frame. If you have an aluminum frame, the edges are likely razor sharp. It may be advantageous for you to de bur the edges before attempting it again. You can also smooth the edges of the glass with emery cloth if it's sharp. I do that if there are ragged edges because those are the areas that tend to initiate cracks, from by experience. It may be advisable to put tape on the glass to prevent any chance of scratching it and be sure to wear welding gloves or similar if you try that to prevent getting blood on your new glass, lol. If you decide to try eurothane, it comes in a standard caulking tube. You can get the eurothane at auto paint stores and quality auto parts stores. The 3m seems to work well, it works awesome to repair work boots too! Be sure to have some eurothane reducer on hand to clean up, it's resistant to most solvents. Also, make sure that you have everything as you want it, it's very difficult to remove once cured. From what I understand, thanks to the insurance industry, eurothane is the only legal adhesive to install glass, particularly windshields, in autos. Butyl is no longer acceptable. I'm not sure if it's available anymore or not. Eurothane is easy to use and definitely stronger, it's just harder to remove. If you decide to do it yourself, make sure that the glass is isolated from the frame so there is eurothane between it and the frame to prevent glass failure. I have used small pieces of vacuum line or any rubber material to assure that the glass is centered, also tooth picks and popsicle sticks are handy. Dry fit it first. When I put windshields in by myself, I measure the glass and the opening, then cut spacers to ensure that the glass is centered and test fit before applying the adhesive. That's about all of the "wisdom" lol, that I have to offer. Hope your second attempt goes better!