I Have A Yamaha Pro50 1989 I Got This Couple Of Days Ago, I Putt It In Water Today And For About 15 To 20 Minutes It Ran Perfect When It Started To Lose Power I Pull Back On The Throtle And It Got A Little Better, But When I Put More Throtle It Just Droped The Rpms. The Carbs Were Cleaned Before I Got The Motor They Look Very Clean I Put A New Portable Gas Tank With A Yamaha Fuel Hose And Bulb I Noticed That There Was A Little Bit Of Fuel Comming Out Of One Carb ,this Motor Has 3 Cylinders.also It Was Idleling High So I Adjusted The Throtle Cable.if Anyone Can Help Me With This Issue Please I Would Realy Appriciate It Alot Thank In Advance.