Help!   My brand new MS391 I topped up with fresh (Makita) chainsaw oil, and off I went to try it.   Despite turning up the oil feed to near maximum, all it does is soak the exhaust, inside and outside of side cover, and the chains as dry as a lizards tongue.   Chain was very hot when I stopped to investigate. This is with a brand new Stihl 16" bar and chain, so can't be due to clogging or anything. Still only half way through my first tank, if that.   There was fresh oil showing in litt