HI Sloppy,
I am guessing that you sized a frame down and the node you are looking for is no longer visable.
You could size things up and start looking but there is a better way.
Fisrt drop the object you are trying to find on a diagrasm and then select it and then copy it to your clip board (ctrl-C).
Then go to the hiearchy screen and do a "ctrl-F" (find). In the dialog box make sure the search all VI's in memory option is selected and that the search for object is selected. The displayed object should be the node you have copied to your clip-board. Then just do the search. It will find object that are baried, covered etc.
Try it,
Ben