@Critter-3 just to confirm, the OP needs to request at least $1100 for the RRC on the 1040X.
If the OP requests more than $1100, the IRS will adjust it down to $1100, which is what the OP is truly entiled to.
However,
if the OP requests anything less than $1100, the IRS will not adjust it back up to $1100.
The IRS will only adjust errors to its benefit. 😒
