Hi pau13z, This problem I have only ever experienced wit PT's on the 24's and every 24 I have had has had it from the get go when I picked them up. Hundreds of PT's on standard bases and never a problem. The other thing is they don't start anywhere like a standard mower that should start first pull every time. These kick and buck and just because you had it running 2 seconds ago does not mean it will start again and it will go through its performance of kicking back, but then it might just start straight up or just decide to try breaking your fingers. If you are talking about a piece of wire to hold the valve open that is just going to burn the valve out fairly quickly I would think but it seems like somebody had a similar problem
