We discovered that the HSA monthly deductions were coming out of the paycheck, but not being submitted to the HSA Trust account. Also, there was a change in payroll providers from a local CPA to ADP. The first two ADP pay statements showed the HSA deduction, but the Year To Date totals were blank. Once the HSA deductions began to post to the HSA Trust account, then the Year To Date totals on the pay statements began posting and these amounts totaled the $300 shown on the W-2 in block 12. So, it appears the remaining $750 of the $1,050 deducted wasn't posting properly as an HSA deduction from the paycheck.
