I'd say it'll be just fine Andy. They are resiliant engines and I've run mine on the leaner side of great more than once in the search of perfection. Just be aware of the signs and if they present themselves go richer. Watch for blowing coolant, high racing idle that won't drop, run on/surging when rolling back/chopping the throttle, and the most noticable just a flat unresponsive feel like the engine is gasping for air/hesitating when opening the throttle. Most noticable on a hot engine thats being pushed or under load. May experience some pinging in the same scenario too.