Baby Quilt Progress and Delay

On Wednesday I started machine quilting Henry's quilt, in the ditch with the walking foot, and couldn't get the stitch to look right. I rethreaded the machine, changed needle, moved upper tension-all to no avail. Alas! Found that the bobbin case is broken, because there is no lower tension at all. I tried tightening the bobbin case screw, but that didn't do anything. The hook must have bent or loosened when I dropped the case the other day. Will have to take a trip to Rochester to have the shop repair or replace. It's so darn cold I haven't been leaving the house-but this afternoon it's supposed to get up to the upper 20's so I may go.