Ventilation exhaust fan on remote blower (thermaodr 1400q) is making scraping sounds on the fan housing at all 3 speeds (hi, med, low). I looked at the fan and the vibration mount bolts are bent downwards. I purchased new vibration mounts but it almost looks like i have to take the entire housing apart to get the mounts out. I was wondering if there was an easy way to do it.

Thanks.