Strange behavior in vehicle

I've been using Jester Knox's heavily commented hover car script to get my feet wet with vehicle scripting. For the most part, every thing's working alright - with the exception of the strafe left part.

I haven't made any changes to the original code in /54/96/52097/1.html save for tweaking some of the values - but even from the start the left strafe never worked. Oddly enough, the if block that is supposed to catch the Shift + Left Key is working. I know because I dropped a llSay() into it and it happily spamed the chat when tried to strafe left. For whatever reason, it's not updating the linear.y, but I don't understand why.

// when shift and the left arrow or shift and a is pressed ------------
    if (level & CONTROL_LEFT)
        // strafe left
        {
        linear.y += 10.0 ;
        //angular.x -= (PI / 180) * 55.0 ;
        }     
    // when shift and the left arrow or shift and a is released    
    else if (!(level & CONTROL_LEFT))
        // stop strafeing left
        {
        linear.y = 0 ;
        }

// allows us to alter the speed based on the pilot/driver's input
    llSetVehicleVectorParam(VEHICLE_LINEAR_MOTOR_DIRECTION, linear);
    // lets us turn
    llSetVehicleVectorParam(VEHICLE_ANGULAR_MOTOR_DIRECTION, angular);

Even more puzzling to me is that the code to strafe right is nearly identical to this and it works perfectly.

The forums occasionally add extra spaces where they don't belong.
This should read...

llSetVehicleVectorParam(VEHICLE_LINEAR_MOTOR_DIRECTION, linear);
// lets us turn
llSetVehicleVectorParam(VEHICLE_ANGULAR_MOTOR_DIRECTION, angular);

Without the extra spaces in the 'MOTOR_DIRECTION' variable name.

====
Sorry, Fenix. Didn't mean to insult...it was just the first and most obvious thing. I'll try in world, the script you reference.

I'm aware of that. My in-world code is correct in that respect - otherwise it wouldn't compile at all, which mine does.

I was just being lazy when I copy & pasted my code into the forum.