So, I was lost in my own thoughts this morning on the commute in, vaguely noticing the lovely fields around me, the birds singing, the snails crunching under my tyres, when I was suddenly struck by a bolt of the obvious...
How come fork steerer tubes aren't keyed?
In fact, any type of tube where mounting a stem is a simple and exact job leading to a perfect alignment would be better than the current system surely?
Right, I'm off now to get a cuppa and then have a fettle of my stem so that it is perfectly in line.

