Hello... welcome to the board. There is no doubt that a picture would help. I am not sure that I understand your situation
I know that some quilters do not stabilize their tshirts, but I always have.
I know that I have made several tshirt quilts and most of them I like best when the tshirts do not line up. Google tshirt quilts and there will be all kinds of different types
I realize that I am far from the best, but here are some of mine
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