Refer to the purchase order and please inform that can you upsize the traverse(HK no. 30253061) from original 9.5 ton to 12.5 ton and traverse (HK no. : 30062600) from 6.5ton to 9 ton because the spoil weight always over the safe working load Herrenknecht design even the soil content in the skip is not at top level. And recently one of the hammerlock is giving loud noise while hoisting and stop hoisting and later we found out the sleeve is already worn out (after 1 km drive) .