Note that with the above code, you are actually skipping 11 channels on a clockwise turn when clicks > 1 as both (clicks > 1) and (clicks > .99) will return true.

if (clicks > 1)
channel +=10;
else if (clicks > 0)
channel++;
else if (-1 > clicks)
channel-=10;
else if (0 > clicks)
channel--;
else
{
// do nothing as (clicks === 0)
}