I recently ordered this bedliner:
https://www.amazon.com/dp/B07RKYKWH1/ref=cm_sw_r_cp_apa_glt_fabc_6ZKXZ14P3DAB6HH83YR5?_encoding=UTF8&psc=1
The instructions suggested to cut away some bedliner under the lip so the clamps could contact the metal. This makes me understandably shudder cause this...