Guantee that every thing in the induce system settles in position before installing the mount - reinstall the slide and check out the induce. Once i did it for The 1st time, my 3. Utilizing the instructions I was easily able to setup the stair nosings. It rained again https://www.primmaryarmshop.com/product-tag/fn-510-accessories/?per_page=9&layout=list