I have a 1099r form but there was an adjustment made to the RMD witdrawl amount and I received another check. Additional tax witholding of 6.62. What should I enter?

Primerica said they would send a 5498 form? in May.  I just want to know which amount to enter...what's on the 1099r or add the new amount by additional additional fed withholding of 6.62?