I have also had this problem. I ripped out a small area as suggested by others and pinned before resewing. I had tried using less pins and that is how I got the puckers. Usually I pin, pin, pin when I am not using the machine on a frame. I normally place my pins about 3 fingers apart.
Good luck and they are small enough that they should work out just fine.

Carol,
Did you prewash your fabric? You might find, if you temp bind, wash, and line dry.....it works itself out. Oh, the puckers that are obvious to you, you'll likely want to try to fix, but I would surely do a wash and dry before I leap into having the ripit fever! The quilt is just beautiful, you've done a wonderful job.

ONE thing I think you need to tell yourself, "Quilting is fun NOT Perfection", repeat as needed to be convinced. It took me awhile to learn to loosen up and enjoy the finished look and not concentrate on any imperfections. Most that see the quilts never see imperfections, they see the love that built it!

Hugs,
Sharon

Thank you all for all the wonderful suggestions.

I have taken out the puckers but I have not decided whether I'll take out all the quilting and start again or just try to stitch the areas that I've ripped out.

I'm leaning toward trying to restitch and starch.

Thank you all for your encouragement!!!

Now that your puckers are ripped out, pin the dickens out of them and stitch slowly. Your walking foot will probably take care of it.

I don't understand the concept of starching. I would think that the ironing will flatten or matt the batting. I've starched fabric, but never once the quilt is assembled. I suppose that's what I like about this board. Somewhere, somehow, someone has done something that has worked. :lol:

Before i give my suggestion, I will admit to two things: being somewhat new to quilting, and I confess I am a nut about what other people will think, so I am not sure I could do this suggestion myself. I'd probably rip till the cows came home...thus, quiltncrazy, lol!!!!!!!
If you are really unhappy with the back, bc the front is very pretty, what if you covered the back with another back, and tied it instead of machining. If you don't want ties on front, just do lots of ties and bury in the batting. The front is already quilted. I don't know if this would make your quilt stiff or heavy.
I think you probably need a (((hug)) for all that work.
I hope you can do something that makes you happy with it. C