PS9.2 Audit 941 to PAY018

We are working an audit to verify the Payroll Earning Code Totals (PAY018) to the 941 Data.

I was attempting to balance to the 941 Line 5 C which is Medicare wages. I think 5C should equal all Earning Codes that are subject to FICA, plus all benefits/deductions that add to FICA.

Has anyone done this before?

Is there a better way to validate that what you pay and what you posted to the GL is what is showing up on the 941?

Thanks in advance