I have completed my schematic and PCB layout, I began to add tracks but found in certain places I cannot add any track?? I have a row of headers on a 0.1 pitch and the centre row of pads are common (VCC) and need to be heavy (2mm) I selected add track (W) and bottom side (B) clicked to add track and I can see a blue dot for the start of the track is added but it won't let me extend the track out of the pad?? i have tried altering the snap and grid sizes and the track width but it makes no difference? If I select a pad on the end of the header it allows to add track?? What am I doing wrong?? Please help!! I have added a screen shot of the connector and you can see it has allowed me to add one track along the centre row - but it wont allow me add the next piece of track to the right??