I acquired a CMMG 42rd'er. The previous owner replaced the braided spring with an ISMI 40rd spring. I know the spring attachment hole on the CMMG follower is toward the front of the follower compared to a std green GI follower. I don't know how the original braided CMMG spring attached; so is there a trick to make a std. 40rd spring work with the CMMG stainless follower? When I install with the follower loop thru the follower hole, the spring points against the curve and will not stack behind the cart. shoulder grooves in the mag body.