Thanks for the info! I wondered if it would be worth my while trying to use the attachments. I know you have to stretch the neckband to fit the neck opening, and I wondered if the binder attachment could do this stretching...My main issue with the neckbands is taking my time to get the stitching straight

Practice, practice, practice! The stretch thread, Maxi-Lock Stretch, was not available at my local fabric stores, but I did order it online, along with 1/4 inch ribbon elastic (couldn't find that here either--I tried the 3/8 inch elastic sold locally, but it was too large and firm to stabilize the shoulder seams, in my opinion), Will let you know how the stretch thread works in my sewing machine twin needles. If it works well for the T-shirt hems, then I may not need a coverstitch machine.