Originally Posted by LeslieFrost
Oh, no, that IS terrible!
One suggestion: Try to find a lightweight iron on stabilizer or interfacing and apply that to the back of some fabric and one or two of your existing blocks. See if that gives enough strength to go on with. In a book I just acquired, the author recommends Sulky Soft 'n Sheer stabilizer.
Good luck!
This is what I would try before replacing all the blocks. You will find this stabilizer in the embroidery section as it is used with embroidery machines. Really helps with the fabric.