Dawn,
One challenge with attempting to help in these situations is not knowing the experience level of the person posting the question. Please bear with me while I run through some more likely places to look, which may be elementary to you...
>1. 0 and I do have a deleted tag
Have you tried it without the deleted tag? With zero deleted records, it might make a big difference. There have been several discussions here about that in recent months.
>2. different sets based on the query
> on 1 test 13 records back
On the 13-record test, which took 1 - 2 minutes I presume, did you have values in all of the query parameters?
And what version of Fox are you running?