Opposing Slides Lock Bars

I have a 2007 Holiday Rambler 40' with large opposing slides in living area and kitchen. It is equipped with lock bars in the front area. Are they necessary? When secured tightly they are causing the decorative frame and seals to start separating from the wood veneer. When we tried to loosen tension one of them fell and almost hit me in the head. Our mechanic says they are not necessary and slide rooms will not deploy when traveling. Need some advice from folks that have similar MH configuration.