Nanatoone

I have been having problems when I get to the bottom (about the last few rows) on my queen size quilts with the thread getting under the presser foot and it will skip a thread about an inch long and then start sewing ok again. my friend said she thinks my last leader (the one you pin the top on) needs to be wider. has anyone else had this problem? and should i make the leader wider? Thanks for any info anyone can give me. I hope this makes sense.
Shirley