I'm pretty sure there is no mid support. The thing is so darn stiff, may just a little pre-load on it's position then clamp 'er down. Also the little thingee's that the air box mounts on, rubber shocks, get some extras cause vibration does kill them.
OK Fine !!! I'll put on my slippers, brave the AZ cold, and go check ....... nope. The only mid point thing is the inlet for the hose to the oil cyclone and the swivel adjustment clamp.