This might sound like a dumb question, but did you identify the target before using the stadimeter? I mean browsing through the recognition manual until you've got the correct page, then locking your target and "ticking it" from the rec manual? If you're not doing this, then the mast height, which is critical to accurate stadimeter readings, will be wrong resulting in wrong readings. Don't worry though, my money is on Rockin Robbins showing up any moment and trying to convert you to the Dick O'Kane method, now that we mentioned the word "stadimeter". He just hates that device