I just bench ran my new YS110 All fittings properly connected and secured. Fuel used was Byron 15% with 20% oil. Needle opened 3 turns. The engine started easily and I began to run it at about 3600 r.p.ms .After about a minute it died. Restarted again and It ran for about 2 minutes and died again. After checking all connections and changing fuel tank pressure line angle (For more clearance from tank top) I restarted again and it ran the rest of the tank fine at 4100r.p.m.s. After refueling I started it again and it quit the same as it did the first tank. I finally got it to run nicely at 4000 r.p.m.s but when I changed throttle settings (lower or higher) it would die again. Is this typical of YS break in or do I have other problems. I am using a O.S. type f plug and a 15/8 APC prop. Any tips or info would be appreciated! Thanks in advance Bass1