I'm crap at them. My winter hack was built up for very little money out of the odds and ends we had lying around. Works fine, but for one little thing - the twist shifter for the gears, which had lost it's rubber sleeve. Never mind, we bodged it with a short piece of bar tape, mostly held on with a zip tie, and one day, it would get glued on properly. It worked, but it slipped a bit sometimes. Well, being me, it never was, and two years later, it was still held on by faith and a zip tie. Everyso often, I'd tighten it all up, and swear I'd remember to glue it on properly. Soon. So, this week, it came completely loose, and being on the way to work, I pulled the bar tape off to deal with later. And discovered that the plastic underneath was actually much grippier than I thought. Grippier than the bit of old bar tape in fact. Result, after 2 years, much easier shifting. I suppose if I'd ever got round to gluing it on, I'd never have discovered it was easier without it! Does anyone else leave things like this (bike or other stuff) for ever, or are you all terribly efficient?