Decompile an ex4 file (Build 600+) for Metatrader 4

I have an ex4 file that I require Decompiled (Build 600+) for Metatrader 4 The ex4 (EA) should perform the same as the Compiled file when tested in the Strategy Tester in mt4 The ex4 file was created using a 600+ MetaTrader 4 Build Bonus will be payed if the Job is completed with Haste and of course the ex4 works flawlessly If it is found that the ex4 cannot be decompiled, then I would like a very experienced MQL 4 Programmer to attempt to re-create the EA as accurately as possible as the original