if that adjustment doesnt work i woudl take it back.. thats not acceptable for yoru release. lets think about that.
here you are at full draw and you want you arrow to go straight as possible. so your gonna shake your hand a little which is attached to a release which is firmly attached to the string which is attached to the bow. the slightest movement and your arrow is 4' wide! that could be a DANGEROUS accident.
take yoru release into the shop and have them check it out if they cant fix the problem they should offer you a NEW release and they SHOUDL send that release back to the manufacturer.

what kind of release did you say it was?