Yes. Since you have 3 or more servos all controlling the swashplate at the same time if they don't travel at the same speed and/or have exactly the same endpoints - you will get an interaction.

Most new CCPM helis have been designed to reduce this situation, but it still requires careful setup of the servo arms, pushrods, and bellcranks. Using precise servos, like digitals, will also make it easier to set up. Most computer radios have some features to help with this too.

Ben