In response to how to increase oil flow on 261, I too feel this is an area where it is possibly lacking. Doing what research I could I found on you tube a short clip on this. The guts of it was as follows :- guy with camera reads from instruction sheet (new) If full flow from pump is inadequate it may be increased by using a small punch to drive in peg adjoining adjustment screw ( i see it is indeed there ) which he proceeds to do. three very light taps and oil flow adjuster screw can then go maybe 1/8 turn more up. Seems unlikely to me so I have not tried it. Explanation was this is to hold back max oil flow in line with emissions etc requirements. might be right, might not-- make your own choice but my first check was inlet screen. Anyone got a new saw with ......INSTRUCTIONS.