Anyone have any first hand experience with small engine repair near Durham they'd recommend? I've got an oil leaking mower with a compression difference between cylinders (one 20 psi lower than the other) and the guy with it now doesn't seem too keen to keep diving to find the root cause. Disappointment aside, this is fine with me as I'd rather find out now vs when it's in pieces. Kohler command 23 hp engine, Deere zero turn if it matters for your recommendation. TIA.