Looking at the fluctuations in the bearing temp, is there a fault with the instrument you are using to measure it? I have seen this on similar Parallel Shaft G/Boxes which was due to damaged wires on the RTD. What is being used to measure bearing temp, and where on the bearing is it located? Is there a 'spare' instrument next to it to check that the temperatures are real?
If you are measuring a temperature of 111 deg C, this would indicate that the white metal of the bearing has reached it's plastic limit. This also questions how far away from the white metal the temperature is being recorded. When inspecting the bearing, has the white metal been 're-shaped' within the bearing?
Looking at the contact markings, it is difficult to say with out knowing the OEM's specification for this and how they expect the markings to increase with load and torque, (I'm assuming about 95% contact at 100% load) but they do look to have a high proportion of the tooth in contact with no load. Where these checks done in the gear case, and with the contract bearings?
A final thought is that when the decision was made to increase the load to 110%, did the OEM re-design the bearings to take this increased load?