I wonder if the “genuine” TCR red ringed caps I sourced from e- bay are in fact knock-offs of the wrong size?
When I came to use them on my Parkers, they were too small and just fell out.
My solution was to fit them with a thin inner ring of blue tack, (yes….I know!!!) and tap them into place with a rubber mallet.
The blue tack is invisible and the caps are still firmly in place after 12 months, so no probs.
It’s not hi-tech but the red rings look great in my view, especially on a sunny day where they are another addition to all the red highlights that look so good on Indium Grey.
If I eventually get round to fitting some CM Prets I will still use my red ring caps. They might be a straight clip into the CMs but if not, Mr Bodge-a-Job will find a simple way of making them fit, with or without blu tack.