John,
That oil temperature seems awfully high for an AA1B (or truth be told, any of our birds). What is the age of your oil cooler lines? They should be date stamped. What type of oil are you using? Have you ever had the oil cooler cleaned/serviced? Are you doing regular oil changes at 50 hour intervals? How long has it been since major/top overhaul?
Here is a link to a recent flight I did in my AA5A with just 9 hours on the overhauled engine. On the right there are pull-downs that say “None” – pull it down and select OIL to see my oil temps. They might be a little higher on a Tiger, but not by much.
N9683U Flight Record
Tracy