I have a Juki TL98Q on a frame. I've never had tension problems with it until this quilt. I have put a new needle, have cleaned & oiled the machine, & have tried different bobbins, but the bottom thread is loose. Sort of like _n_n_n. It is very easy to rip out with just a slight tug. The top thread looks normal. The only thing different is the batting. I was given some batting that is very thin. Can batting cause tension problems?