Barry I can not remember what happened in the strike years if Chrysler was the company that was the strike target or the second or the third to have there contract signed or not. I believe 1984 was a strike year in Canada. I believe the strike at General Motors was 21 days. I can not remember the other years before this. In Canada the contract before 1985 were all 3 year contracts. This meaning 1981,1978,1975,1972 could be strike years. I know in the USA each local has its strike time. This could be some reasons why the paper work would say: Example Seq. Build date of 10-11 and the vehicle because of a srike would delay the vehicle being built by the strike time to 10-29. This is just one of the reasons the build would be delayed for periods of time.