Missing records from a simple calculation query

Hello,

I've been working on a query to calculate the total of several fields for each of my records.

I don't have any filters running all the query does is simply pull up the information and add the calculated field -- or at least that's what I want it to do.

It does do the calculation, but for some reason out of my 564 records, it only does this for 268 records and I can't seem to fathom why its not showing them all?

I've checked my records to check for blank fields and there are none.

Any advice or guidance you can provide would be greatly appreciated.