Most likely your grip and your trigger! The M-9 has a long length of pull and if you have modest sized hands, it's difficult to really get a good grip for double action shooting. helping you by remote control is difficult. Without seeing how you are shooting, it's difficult to diagnose your problem. One thing I can recommend. Dry fire while keeping a good sight picture. Do it hundreds of times. Practice the slow and gentle squeeze while maintaining your sight picture. This will aid immensely in your follow-though. Is the sight flat enough on top to balance a dime on? If so, balance a dime on it, and raise it up to your shooting stance and practice keeping that dime balanced as you pull the trigger double action. It's good practice.
Dan C