Happy Friday
The specific problem is the loosening of my left hand crank arm sideways off the spindle.
They are Redline Proline cranks (single pinch bolt). Now I have tightened everything up as much as poss, but after a decent ride the left crank arm seems to slip out very slightly, meaning the spacers rattle around on the spindle between the arm and the bearings.
It's really annoying me, so any advice would be appreciated.