Here's the album updated to show better pictures of each of the diapers and a better picture of the elastic I was having trouble with: http://www.PictureTrail.com/gid6873227
The bunching looked funny in the first pictures because of the way I was stretching it out to take the picture. One side of it is a little straighter than the others but that's because I changed the length of the 3 step zig zag just after I started sewing down the lastin.
I don't know if I can adjust the foot pressure, I'll read my manual (this is a 40-50 year old machine) but I probably can get a walking foot. Thank you for the suggestion! And it does look like it will loosen up after some washings but since I give these away I can't know that for sure and I don't have the extra time to make one for Nathan to see for myself!
Jayne - I *insist* on fixing this "problem" because people want quick dry, soaker sewn in the back fitteds! I can always use knitted in the back and make it look like the inside of the basketweave does as shown in the album i just posted (toward the bottom) but I hate changing types of elastic just for that! I will if I have to though!
The PUL diaper is just a pocket diaper with a micro inner, I'm afraid to do an AIO and definitely afraid to do a true AIO and even more afraid to use something other than micro for say a waterproof training pant! :LOL Let me know if you make one of the above so you can give me tips!!
I definitely did not stitch through the lastin when I topstitched.. I topstitched way above it and was very careful so that's not the cause. I just don't like the look of this and think there has to be another way to put lastin in the back. I can move the hole but I'm really not sure to where without makign the diaper look dumb or too close to another elastic, perhaps the side of the front panel on front closing diapers is my best option?
Oh and I did tack it down on both sides and pull it evenly, again it's partly the picture and partly my stitch length change 1/4 of the way through sewign the elastic.