Removing the old post was difficult. I had to apply penetrating oil. Installing the new one was not more difficult than removing the old one. I am not a person who forces things. I tend to tighten gently. The new post was inserted until the minimum insertion line. After riding a few days, to my surprise, the post slipped. I am 180 lbs. Luckily, I had ParkTool SuperGrip Compound with me. I removed the post, applied this and resolved the issue. You may ask: what is your problem then? I ahve a few other bikes and I adjust seat posts from time to time. But this one feels super tight making me think that I should have bought 27.0 dia post, not 27.2 mm. I can still spend (or waste) $15-20 to get a 27.0 dia post take it with me to see whether it will be better.