Hi everyone! New to this. Have a few questions. I’m getting an Orbea Gain D- 20. This years model has no rack mounts. Has anyone had any experience with the Topeak Tetramount system or similar? Not Putting a lot of weight on it. Gravel grinding on long rail trails. Change of clothes, water, rain gear , etc. Contacted Orbea and they said it would fit but if anything happens to the frame it would not be Warrenteed. Had already gotten my wife a D 30 used. It has rack mounts. Trying to stay away from large handle bar and seat bags. Any ideas would be greatly appreciated. Thanks!