We have a Wattage Pitts 400 that weighs about 30 ounces. We have a 40 amp speed control and a 3 cell 2100ma LiPo Battery. We want this little plane to rock !!! Can anyone suggest a motor that would work well ??? The one we have barely flies it... It's an E-flite Park 400 Outrunner 740 Kv. We want to swing a 10x6 or 10x7 prop. This motors just doesn't have it....