Matt I just had this exact issue last week. My MP10 was approx 3 years old and started making this really loud annoying grinding noise. I called up ecotech and spoke with them and they provided amazing customer service. I shipped my dry side and they gave me a basically brand new (refurbished) dry side for 50 bucks plus 2 day shipping. For the time and hassle it will take to rebuild you can just get a basically brand new unit for 50 bucks. Worth every penny in my opinion.