2003 XR250R with air box mod and baffle removed. 135 main and 48 pilot at sea level. I'm a self taught and very novice mechanic... After a hard crash, I had problems hot starting and began to investigate possible carb flooding. I have never adjusted the float level and began to limp my way through setting the level by watching videos, reading service manual, etc. After a total clean of the carb to include new float and float valve, I am still leaking fuel from the overflow tube when turning the fuel on. I am setting the level with the carb on it's right side, float valve seated and tang barely touching the top of the valve. I am wondering if I am reading the float tool correctly as silly as it sounds. It's the Pit Posse pictured below, the same one shown in the XR service manual which calls for the height to be 12.5 mm. The photo in the manual shows this setting as well but i'm at my wits end as to why it continues to flood once I turn the fuel on. Any help would be greatly appreciated.