The 757 and 767 at Delta used to have different payrates. In fact there were different payrates for the 757, 767-200, 767-300 and 767-300ER. In the 01 contract ALPA proposal was for the same percentage differences in the pay rates. The company made a counter offer to bring all the aircraft to the same rate with the 767-300ER getting the same percentage increase as all the other aircraft on the property and the 757, 767-200, 76-300 getting slightly higher percentage increases. There has been much discussion about this and why the company offered but it would have been very hard for ALPA to turn down and request lower payrates on those aircraft.