Well those are decent numbers and probably well in-line after 3 gallons of gas.
What other engines have you tried?
LIke I said... dont get me wrong... I am a big WH supporter... owned an Edge, a Yak, and currently a Cap. More than likely shortly a 33% 260

so I am not knocking.. just sharing an opinion... which like most could be a good or bad thing haha.
I just dont see how these less expensive engines are going to compete long term with the competition. Either power or longevity is going to be compromised eventually... maybe not for the average flyer... but a 3D guy has different expectations.