Looking for a recommendation for mechanic/shop for jeep TJ in San Francisco Bay Area who specializes or works on the TJs so they know what to look for. Just purchased my Jeep last November and hear a grinding type noise when driving but it goes away when you are on the gas or in neutral. Only happens in lower gears. Thought it might be front differential so I changed the fluid out but didn’t seem to get rid of it. Previous owner who owned past 10 years had the clutch replaced before I bought it. No funny smell and car runs fine. No issues shifting. No check engine lights. Previous owner says it’s normal sound but just want to make sure. Thanks!