I purchase an STI Eagle 5.0 in 9mm it came with one magazine, I ordered .38/9mm 140mm sti magazines and spacers. When i load the magazine without the spacers the bullets start to nose dive when its about halfway loaded. I purchased arradondo spring/follower kits for .38/9mm with the spacer in the magazine the follower is to long, I am having the same issue with Gramms spring/followers . I have noticed the magazine that came with the pistol has a plastic spacer and a shorter follower than the 140mm .38/9mm STI mags i purchased. Any recommendations?