I guess we have to determine what you mean by loose before you do anything. I'll reiterate, if the action opens easily, but there's no wiggle side ways, the problem can be easily fixed with a shim between the forend and spacer, about .004" will usually make a good difference in how tight it is, the factory will replace the spacer with a thicker one if you send it back. If the barrel is loose when the action is closed and wiggles when the forend is removed, you have a serious problem as Lik2hunt has mentioned.
Tim