Jaka, his question wasn't, "Does anyone think right thrust is necessary?" I have an airplane that could benefit from right thrust and I have been inspired to try fixing the problem after reading that same article. I am thinking of going with some small washers between the firewall and the engine mount. I think I need the right thrust because I need to correct with the rudder trimmed to the right for straight flight. The problem with using the rudder is that this changes as airspeed changes.