Thick part of B string winding on post?

[ndrifka]

Hey guys. I put a set of Fender 8250-5m strings on my MIM jazz 5 string and the thick part of the B string is wrapping around the post causing a slight U shape between the post and nut. I'm worried about breaking the nut due to the stress. Thoughts?

[ndrifka]

The bass loads through the bridge and the 8250s are for through body, but Fender no longer makes 8255s. I like the taper wound B and E with the round core. Any other iideas on tapered strings for this bass?