We just endured a 7 day power outage here in Charleston, WV. I ran my Generac GP17500E for 100 hours during the outage. The display panel is calling for an oil change (no problem) and the owners manual is calling for a valve adjustment. Is this really necessary every 100 hours? It looks simple enough to do but a pain to deal with every four days of running time. Thanks in advance for any feedback!!