My old RS2000 used to get carb icing and at times, I would need to floor the throttle to open the second choke on the Webber Carb to keep the engine running. Replacing the hot air ducting under the air filter sorted the problem out.
I'm amazed that in the 21st century, carb heat is still a manual operation when the consequences of getting it wrong can be fatal. The Luftwaffe sorted out fuel injection almost 70 years ago.
Can anyone explain why icing is more prevalent at low power compared to full throttle ?