1)This parts have been manufacturing with Vacuum fixture, while improving the holding by increasing the vacuum pressure for that operatore kept plus side.
2)While in the first off this was not noticed due to thickness oversized is locally.
3)This was escapped in the line inspection.   
4)From last 2 consignment part was rejected in NDT at API, So safer side operator kept maximum side to buff the parts to which to maintain within requirements. 