Hesston 1070 haybine

I have the chance to pick up a hesston 1070 haybine. I have not had much luck finding any info on them online. There were a few things I would like to know before making the trip to go look at the haybine.

Were they good machines?

When were they made?

What do they weigh ( ball park )?

What type of rollers did they use ? I have found post on other forums saying hesston's rollers were not known for delaminating like new hollands.

Are parts still available ?

I'm not looking at using this on a lot of acreage. Just a couple 8-10 acre fields.

thanks for the help

Hesston 1070 haybine