I haven't slid over any rocks yet. They appear to be well made. There must be some differences between Lexus and 4runner models. For the price you need to support the product better. Simple instructions would make this a better experience. Cali is making a lot of assumptions for the consumer. A little effort and paper will not kill the planet. If you make those assumptions, answer the dang phone.
We apologize for the difficulties you had during install. I believe Bryan shared a video with you that hopefully solved the issue. Glad to hear you feel the product is well made. If you still need assistance with the installation, please do not hesitate to reach out.