Hello ?? I joined the other day because my 500 speedo started to stick so I came on and read some posts and found it’s not unusual, my car lives outside and the weather is sweltering , so I put a sun reflector in the front window and covered my dash with a white blanket, yippee doo it solved the problem, now the speedo rises and falls as it should ? so massive thanks to other members who had the same issue,
Have a nice day x

Well done