masking tape issue
I have been asked to complete a quilt with 12 embroderied blocks. It's at least 40 years old. The person who started it used masking tape around each block and when I've tried to remove it, there is a semi-sticky residue and it reaches into the block that needs to be used. Any suggestions on how to get it off safely. The thread work is very well done and I really want to complete the quilt for my customer. Thank you.