After you rebuild a Porsche engine in your garage, it's hard to justify paying anyone to do/fix anything around the house. I do most everything.

Why do I have so much trouble changing out bicycle tires on road bikes???
Mountain bikes are no problem. Road bike tires? Dang! I keep thinking I have the wrong size or something. Everything goes fine right up until I try to put the last bit of tire over the rim. It always seems too tight. I usually wrestle with it until my thumbs are starting to blister from trying to get the bead over the rim, then I try to carefully and gently use a tire tool to get it on the rest of the way. Eventually I get the tire on the rim only to find I pinched the tube with the tire tube and caused a tiny hole and I have to start all over again.
What's the trick to getting these things on???