Questions before service

[jimi]

I recently acquired an '87 Datejust, caliber 3035. It's the most accurate of my 3 Rolex, gaining only 1 second in 2 weeks and it's on my wrist 24/7. There's only 1 problem: on the timegrapher, it has a high beat error of 0.7-1.0 but beat rate is -1 to +2secs/day on all positions with amplitudes of 245 to mid 270's.
Its service history is unknown but since I bought this from a Jewelry store that has an in-house watchmaker, I suspect that it has been cleaned or oiled (?) and adjusted. I doubt that it underwent full service.
Would you be bothered by the high beat error?
Thanks for any input.
Another reason not to buy a timegrapher?

[Vanessa CW21]

Jimi, that's acceptable. No need for service because of it.
The max beat error allowed right after service is 0.8, so you're close enough.

[jimi]

Vanessa, thank you very much!
It looks like it may still be good for a couple of years.