I would install a stipulation about a discount if a reasonable time after the date due the job isn't complete. I've had issues with every builder having no time to complete my order on time.
Ed Wood(s) had 2 RG 550 necks for 6 mos for a refret and scallop, I got them back and they had to be leveled, costing me more money. The other thing that I was confused about was I sent them down south but they arrived packed in local area newspapers, leading me to believe they were shipped somewhere close to me to essentially be outsourced. If I had known someone was locally available to screw up my necks, I would have gone right to the source
Harper's Guitars: Jem replacement body was 8 mos and I kept getting stories about how it had to be scrapped and restarted 3 times, it was lost in the mail, etc... Once it was delivered, it was the wrong body shape, the upper horn was completely wrong. I sent it out to EKG and he GRACIOUSLY fixed it at no charge.
LGM did the inlay on my Jem in a quick and timely manor, but then down the line I was hoping to have a whole guitar built, he was so swamped with other work, mine kept getting shelved, or pushed back, ultimately causing me to cancel the order, sadly. I have to say that his fretwork on my Jem neck was one of the first that out of the box, it didn't need to be leveled or adjusted, I bolted it on and set up the guitar and off I went. Definitely a great playing neck.
Chris Woods and I set up details for my neck and I made payment in May of 2006, and sadly a 4-6 week build time has lapsed into a year. I want the neck so I'm not willing to cancel my order, I want to see this project completed. I am actually looking forward to getting it, I just hope soon.