YES! I fixed it. The cylinder was on the other way around. The two holes that let air out is suppose to be facing towards the back not the front. Quick look at how the Upper reciever in ICS website helped THANKS ALL for your reply!
*** now it shoots like a charm*** couldnt ask for anything better. REshimmed everything again, Added systema metal bushings, Plus all the parts that was listed above... the ICS m4a1 is a monster now*** Special thanks to MCGUYVER the wiz of upgrades.... juggz for the help in installing bushings and hours of staring at the mechbox...and kid for suggesting to look at how the thing actually looked****
Now I am sort of a wiz at upgrading!