Done something seriously stupid - I unwittingly left fuel in my raptor 30 v2 the other day (4 days ago). When i went to start it last night the torque statrer wouldnt have any of it. It turns out the piston had stuck (seized). I undid the housing and gave it a very light tap which freed it up. The engine now starts fine, idles good, revs up ok. However, once i put aload on the engine it seems gutless, and takes almost top stick position to hover/fly etc. Smokes alot as well. I changed the glow plug- seems like plenty of fuel is getting into engine. Is there any reasons for this behaviour other than the engine being damaged!!! Please help.