I would advise contacting an expert and seeking their advice. Kiltmakers love kilts and treasures like this.

Give Kathy Lare a call www.kathyskilts.com I'll bet if she doesn't have any suggestions she'll know who to have you call for advice.

The old adage, "you can measure a thousand times but you can only cut once" probably applies to this vintage kilt. A treasure for sure.

You might also ask Matt what he does at the STM