I attended the Slipcover Summit last June and could really use your expert opinion in this situation! I am making 2 slipcovers long distance and so do not have the chair. The customer wanted me to make the covers from an existing old cover, so she sent it to me and I took it apart and made patterns from it.
The problem is that the outside back is about 3/4 of an inch shorter than the sides which is causing me grief in inserting the zipper. The keyholes match up with the front of the outside arms and deck perfectly. The actual back pattern piece is correct too. Would it be ok to trim the outside arm 3/4 of an inch shorter where it meets the zipper and taper it to the halfway point of the outside arm piece along the bottom edge?
I realize the old pieces have probably stretched a bit out of shape, so that my patterns are not perfect. The crazy thing is that I can stretch the pieces enough to make the seams match on the left back where there is no zipper, but cannot do so on the right side with the zipper.
Any help would be appreciated.Sincerely, Jenise LeMaySew L'eMayzing www.sewlemayzingwindows.com