:biggrinbounce2: HELLO TO ALL :}:}I have read alot of these threads and they have been so helpful to me!!THANKS own a 031-av stihl real nice I love it.. doing the saw over now,carb seals, lines ect...But I'm having a case of the bogging down ..then the saw Rip's like an animal.FRom my info gathered i hoped it was an air leak,hose..???It just was not getting fuel consistently.. So I rebuilt the carb all lines ,new impulse line,seals ect... All the things I have seen posted on this site..:} I'm waiting for the impulse line in mail.i HOPE TO GET IT TODAY BUT IF THE IMPULSE LINE FAILS TO FIX THE PROBLEM OF BOGGING DOWN,NOT GETTING ENOUGH FUEL ECT..LOL IS THERE ANY OTHER POSSIBILITIES OF WHAT IS WRONG????? THANKS IF ANYONE HAS SOME IDEAS...NEIL:biggrinbounce2: