1/4 of an inch is less than 2 degrees of incidence based on a chord of 8 inches. The wing should almost always have a couple of degrees positive incidence. Is it a suprise it flew well......Nah!

I fly a special purpose plane. It is designed for the heavy lift competition in Palmdale this weekend. It has a wingspan of 118 inches. It is powered by an OS 61 FX. The plane has taken off in 200 feet with 22 pounds of steel on board (31 pound total weight) at an altitude of 4200 feet. The wing is set with an incidence of about 4 degrees. The plane flies fine with that much incidence especially when unloaded.