Brake caliper bleed nipples

[NAC63]

Recently had my brake calipers done yellow by a caliper specialist after I've done about 250 miles I've noticed that all the bleed nipples have a very slight weep of fluid which has damaged the paint around the nipples,at the time of painting the calipers were pressure tested and new nipples fitted could it be possible the wrong nipples have been used or are all the sealing tapers on the end the same?I have tried nipping them up but they still weep.

[8Tech]

Taper should be the same. If they were painted with the nipples out the paint could have got on the seats which has now stripped or if they were shot blasted prior to painting, that seat could have media trapped or the seat damaged.
Either way, they need to rectify it or explain the success of the pressure test.

[NAC63]

Yes thanks I agree .I will be on the phone tomorrow. The threads were clean from blasting with no paint in but I think blasting may have damaged the seats.