hold on....if it lands fast it means it is nose heavy...tilt the engine like i said and add a small amount of lead to balance.

HOW TO FIND THE CG ON A STRAIGHT WING TRAINER. MEASURE THE WING CORS INCLUDING AILERONS. EXAMPLE 10 INCHES.
MULTIPLY BY 28% AND THAT IS THE CG YOU WILL WANT. 2.800 IN FROM THE LE OF THE WING. PRETTY SIMPLE. FORGET WHAT THE BOOK TELLS YOU.