Soak the rice sticks in cold water for about half an hour until pliable and drain.
To make the sauce combine the fish sauce, tamarind and palm sugar in a small pan, heat gently to dissolve the sugar.
Add chilli powder as much or as little as you like.
Heat a heavy-based frying pan with a little oil, add the garlic and stir, now add the soaked rice noodles with a dash of water and mix. Add the sauce and ensure noodles are thoroughly coated, remove noodles from pan.
Reheat the pan with a dash more oil and fry the tofu and king prawns for 2-3 minutes and push to one side of the pan, add the eggs and mix well (scrambling). Re-add the noodles along with the remaining ingredients ensuring all ingredients are well mixed together and heated through.
Serve immediately along with the Lime wedges and Chilli flakes as garnish.