Restoration of a rare vintage Omega Seamaster Cosmic 2000 Omega 1012 Service

This time iam restoring this beautiful Omega Seamaster Cosmic 2000. Its powered by the Omega 1012 automatic movement and it beats at 28800bph, the lift angle of the balance is at 52. Omega introduced this model back in 1972 on the international collection. This OmegaWatch has one of the rare pressin cases. The inner case (container) is pressfitted into the outer case (jaquette) by an additional ORing. This ORing seems to have completely dissolved on this watch. The container doesnt hold in the jaquette anymore and the residue of the ORing sticks everywhere. Apart from that, there are some signs of wear on the caseparts, the crystal has many scratches and the crown comes lose as soon as i tried to set the time. The movement works but loses more than 1 minute per day. I need to disassemble the whole movement, clean all the parts and reassemble it with some fresh oil. The settinglever is a bit bent, thats the reason why the crown comes lose when i tried to set t