The stuff you can try dunf is from Frost Automotive
https://www.frost.co.uk/frost-strip-gel-500ml/
The preferred method years ago, if it was small enough, was to chuck it in a bucket of thinners or Acetone. Not so cheap to fill a bucket these days though!
The Frosty stuff is better than yogurt, but you'll still need to be patient and expect to need at least two applications.
Thanks Darren. I think I'll stick with my trusty old cap, but the thought of my bike singing
HELLO to me as I went to mount is very appealing.
Anyone got a version that plays the intro to Start Me Up, or any other super cool Stones into? (I love them all.
)