I'd taken my 2000 Cherokee to a mechanic, who was more of the shade-tree-type rather than a fully professional shop like Groff's. Somehow, fuel feed hoses weren't replaced properly and a piece to protect the steering column was dislodged, leading to road noises and what I'd thought was a different engine noise. It concerned me enough to not drive my Jeep. I'd spoken with the local owner of FN Jeep, who told me he trusted Groff's for his work. I've been happy ever since taking that advice.