Rev counter is probably a simple electrical connection problem. Had the same on my '76 once.
Check the fuel lines for fuel filter (should be under the bonnet close to bulkhead), might be time to replace it.
Also, as you are "piling on the miles" since collection keep an eye on coolant temp and level. My water pump failed after a thousand miles or so due to lack of use by previous owner.


Graham (G4FUJ)

Sold L44FOR 4/4 Giallo Fly
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