hellow guys i need some help with the snap roll i just finished biulding a cg extre 3oo it flys great .but when i try a snap roll it does a snap and a half no matter how fast i realise the sticks the airplane is balanced level and so are the wings any help would be appreciated thanks eddie

As you neutralize the sticks apply opposite rudder momentarily. That'll stop the roll. Generally what have is caused by heavy wings.