Hello, I am building a DKM BIsmark and would like to make it big gun. I tried to contact almost all of the rc naval combat members in the area ( Pheonix, AZ ) to meet up with them to see how the cannons work, etc, but none of them have responded. Does any one have any advice as to what I should do to get my DKM Bismark model in big gun format? Thank you -Dexter