Just brought back my JH from the shop. Work included a full rebuild of the Strombergs that were leaking and running very rich. It ran well on the ride home but at highway cruise around 3500 RPM in 4th and 5th gear it would hesitate and lose about 500 rpm. It’d then surge back to 3500 or so. Before I call the shop to discuss I wanted to ask here for your thoughts. Clogged fuel filters maybe? It’s also seems to be idling pretty high - around 1200-1500 rpm.
