My Riva is slow. To progress as it's so hot here in 90%.Still I have the Base to the famous top part on and satisfied with the way it's coming. #1 9 years ago Riva My Riva is slow. To progress as it's so hot here in 90%.Still I have the Base to the famous top part on and satisfied with the way it's coming. Am a member of Torrevieja model boat club here in Spain.