CS6 video track 1 problem

[Peter5E82]

Have used Premiere CS6 for several years but never come across this problem. Every clip put on Video Track 1 (with the head frame only showing) the image is over large with the bottom third missing. Move the clip to Video Track 2 and all is normal and correct.

A screenshot is attached to better explain. Whatever setting for the track display is used the problem is the same.

Despite earnest my efforts I can’t correct this. Can anyone advise and help please? 

[Ann Bens]

...so we dont have to download unknown files: we help you, you help us. Thanks! 

[Peter5E82]

So sorry. I'm a bit new to this sort of thing. Do you want me to post my question again following your instructions?

Thanks.

[Ann Bens]

No just embed the screenshot.