Have you checked Pellon 906F? I haven't used it yet but it was suggested to me for t-shirt quilts. I have everything but haven't started yet. Anyway, the 906F is very thin so would add hardly any weight. It would take some picky cutting of the Pellon but I think in the long run it would help the quilt over-all.
The idea of adding lightweight muslin between the top and batting might be a good alternative also.
I don't think the stitches will pop because of the lack of stablizing as much the shirt material will bubble and deteriorate between the stitching.
Last edited by selm; 03-07-2018 at 01:20 PM.