I loved the EZ Kits back in the early 80's I still have a Comander 20. I have a K&B forty in it. I take off and fly around at wot then set up for a landing. Don't think I ever got the engine to idle. Sure pulled that 20 around. I heard there factory burned down. To bad they were fun ARFS. Had a few Lanier Darts good inexpensive kit.