Anti-Tilt Followers (CProducts)???

[Sinatra]

I bought 3 used Kay industries 30 rd. AR mags. They are aluminum, and in good shape. They have what I believe to be CProducts Anti-Tilt Followers in them. The followers are orange and look just like Magpul anti-tilt followers, except they don't have the MP logo. They have 556 in small numbers on the end of the follower (front of the mag). I have a CProducts magazine with a gray anti-tilt follower that also says 556 in larger numbers, but in the middle of the follower. The CProducts magazine with a gray anti-tilt follower works fine. However, ALL THREE Kay industries mags with the orange followers caused a FTF (failure to feed) after exactly three rounds! The followers looks pretty much identical to the CProducts 556 follower. Do any of you have any experience with these orange smaller font 556 followers? Should I just get some Magpul followers and swap them out? Could it be the springs? Thanks for your help. I've posted some pics for comparison. The CProducts 556 follower in the pic is also orange, but mine is gray.