NEED HELP WITH PROCESS FLOW FOR A CUSTOM-SIZE (NON-STD) PRODUCT ORACLE EBS 11.5.9

SCENARIO:  WE BOOK A SALES ORDER WHICH INCLUDES A NON-STD-SIZED FG

                     THE FG IS ULTIMATELY ASSEMBLED BY VENDOR FROM COMBINATION OF OUR COMPONENTS AND THEIR COMPONENTS

                     WE HAVE TO INTERNALLY MFR CUSTOM SIZE COMPONENTS FIRST TO SHIP TO VENDOR (WE OPERATE OFF A 4 WK MFG LEAD TIME) FOR ASSEMBLY/COMPLETION

                      VENDOR HAS A 2 WK LEAD TIME TO RETURN FG TO US

                      WE THEN TAKE CUSTOM ITEM AND COMBINE/SHIP WITH ALL OTHER PRODUCTS ON THE SALES ORDER

                      WE CURRENTLY ARE QUOTING A 6 WK TOTAL LEAD TIME FOR SHIPPING TO OUR CUSTOMERS,

REQUIREMENTS:  MFG DEMAND FOR CUSTOM 'MAKE' PARTS MUST BE ADDRESSED EARLY AS THE VENDOR NEEDS COMPONENTS FROM US ASAP