I think he means the idle screw will bind on the low speed slide unless it is open. I remember something like that with a sirio I had years back.
I figured I would post a video of this thing running too. this was from our main event race. I mixture of different trucks. I'm getting 10 mins out this thing already. ODO 97T still hanging in there Zixxxer, no issues.
http://www.youtube.com/watch?v=TkTCQU3VdKY