Terminator Stuff

In Terminator 1, Kyle Reese refers to the machine as "T-800, model one-zero-one" and claims it is just being systematic. Yet in T2, Arnold refers to himself as "T-800, model one-oh-one". Furthermore, the film is set in 1995 and Arnold says John sent him "35 years from now", even though 2029 would only be 34 years from then. I always thought that was strange. I can understand replacing the 'zero' with 'oh' because it's more efficient and less syllables, but rounding the date was weird.