My instillation went very easy. Not usually the case for me. I have a 2016 2 door Rubicon. Shortly after I bought it I learned about the issues with Jeep door hinges becoming stiff and hard to remove so once or twice a year I would remove the doors and clean and grease the hinges. lubed them extra heavy before winter. Eventually the "nylon?" at the top of the bushing was worn away so after 4 years it was time to replace them. After some research TMR had the best reviews. Not the least expensive but you get what you pay for. Due to regular maintenance the old bushings came out without issue. The new TMR bushings went in snug but easy with a firm push. As a firm believer in lubrication I did put a light coat of quality synthetic firearms lub, safe for plastics, on the hinge pins before reinstalling the doors. The doors swing smoothly and my anxiety over frozen in bushings is put to rest.