Since your other PE's are not reflecting the right path its more a issue on the MPBGP. But still to sanitize things, pls run this checklist.
1) Assign a Metric when redistributing RIP--> EIGRP on CEA and CEB.
2) Assign a Metric when redistributing EIGRP --> MPBGP on PEA and PEA.
Since the other PE's are not reflecting the correct path, dont transparently pass
the EIGRP metric into MPBGP, assign an equal metric of lets say "2" on PEA and PEB
when you residtribute EIGRP into MPBGP.
When you do this all the other PE's in your network will prefer the closest IGP path
for the default route.
3) Assign a metric when you resitribute MPBGP into EIGRP on both the PE's (A and B)
If you confirm positively on these above points and have taken care of the same it should work.
HTH-Cheers,
Swaroop
