Hi everyone. Was readying my cutter for use I found that my round stump jumper has a slight bit of up/down play in it. If I push up on the extended blade, that blade goes up and the other down. Total play on one blade tip to tip may be 1/2 inch. Stump jumper measured play 1/8 inch if that. No rotational problems or missing or skipping on shaft, blades are properly secured and in good shape. Castle nut is tight and cotter pin is present. Overall, the cutter is in good shape, 7 or 8 out of 10, still has the factory bar code, etc... It is older(bought used) but I have used it for 3 seasons now without a problem. My question is do I now have a problem? I do get some vibration at low PRM pto engagement, but that quickly disappears. My wife has a new 4 foot King Kutter on her tractor and there is no play on her stump jumper. Any thoughts? Should I be concerned. Thanks!