All I can tell you is that I have owned a laundromat for 9 years now.
1. Don't dry on high heat.
2. Use the largest drum you can find. This give the quilt space to flex and release the moisture.
3. Check if often, re-position in the dryer.
4. Dry on delicate setting if the dryer has one.
5. Orvis is probably the best soap for quilts as you have no idea where these fabrics came from.
6. Good luck!!