Engine Temperature

[Jareb]

1985 300TDT
Just did a lot of preventive work on my car including new coolant and thermostat. Zerex 05 coolant and Behr 80 degree thermostat were used. My car used to run at a consistent 85 degrees in Florida summers before I serviced the cooling system. It now runs 95 degrees. I know this is the upper end of normal but it just doesnt sit well with me. I would much prefer 10 degrees less or even 5 less. Several posts on different forums say that this is normal for new Behr thermostats....they tend to run a bit higher than their rating when new.
Does the "spring mechanism" {or whatever its called}on the thermostat tend to weaken a little over time and then open closer to the rated 80 degrees?
The car gets no hotter than 95 now, no matter how hot it is outside or how hard I am running....its not overheating.
Is there a different brand of thermostat that opens closer to its rated temperature than the Behr does?
Car has been driven about 300 miles now so I dont think there is an air bubble in the system. Dont they self-burp after a while?
Thanks
John