Hi friends, I recently bought a book that has ALOT of really good advise on pairs and line adjustments. Its easy to understand, and has lots of illustrations on ' how to'. Its called "A teamster's view more and different" by Steve Bowers. Its self published 4269 North country Rd. 13, Fort Collins, CO 80524 970-484-9419 www.bowersfarm.com I found that it is now a great addition to my reference library. BTW- it has recommendations for 'leaning/pushing' pairs! Trish Demers Carpe Diem Farm Hackneys & Sport Horses, training & lessons - driving, riding, sidesaddle, horsemanship Lancaster, CA carpediemfarm@xxxxxxx Try hard, win humbly, lose gracefully, protest with dignity