Hello there, @ajlitt.

Let me provide some information about uncleared transactions in QuickBooks Online.

When you say you're having trouble reconciling, are you referring to your opening balance? If so, once you've unreconciled transactions from previous periods that have appeared on your bank statement but your opening balance matches, possible is, there are transactions that have already been accounted for (duplicated and marked with an R).

To resolve this, you'll need to identify the transactions by following the steps in this article: Troubleshoot reconciles when the opening balance is correct. 

If you're referring to something else, any details you can provide is extremely helpful for us to narrow things down. 

For additional reference, you can check this article: How to fix differences between QuickBooks balance and bank balance.

Drop your comment below if you have any have any other questions and concerns. Have a good day!