I'm glad your financials are finally balanced!  As for the 11320 account, check your item class codes and see if this is the account used for WIP.  If it is then you just need to change the account name.  If it isn't then I am curious about what is posting to this account.
AS for the PO receipt, are you looking at GL-O by a certain date or all dates? If by a certain date, did he use the same dates for all the receipts?

It sounds like your transaction is correct in The Purchase Order record, have you checked inventory?
 
It is probably just the GL transactions that are wrong-- this happens to us too once in a while when there is some kind of record locking error.
 
You need to click on the "out of balance" report at the bottom of the GL-O screen to see which transactions are out of balance, and then use GL-P to edit the entries.  You can find them by doing a look-up for account and then the date to find the ones that need correcting.

Glad to hear you got that fixed, Jamie.  
I get soooo much help from this forum-- it is a pleasure to give some back!    

I suspect your Asset WIP "Variance" is not a variance, but the actual materials and labor collected while the work is in process.  As you collect costs, they are debited to this WIP asset and when you finish production they go from the WIP asset to the Finished Goods Assets.  
 
If you close the work order when you finish it, all the costs for that work order are taken out of WIP (credited) and put in (debited) to whichever FG account you are using for that item.  
 
If you leave the work order open and collect more costs after you have finished it, those costs are expensed to the WIP variance  Expense account when you close it.  Or, if you finish production at standard cost instead of actual, the difference is posted here when you close the work order.
 
Double check your class codes for your manufactured parts and see if the account you are calling Asset WIP Variance is used as the WIP account.  If it is, I would rename that account to WIP or Work In Process, and take out the confusing "Variance".

System Manager, SM-C, Enter Item Classes.  Click the <Item Class GL's> button at the bottom of the screen, highlight a class code that is used by a manufactured item, and click <enter>.  The class code GL accounts will be displayed (and can be edited here).  You want to look at WIP Inventory Asset.