Savara thermostat wiggling 308?

I am tempted to reinstall the old Savara thermostat in my 308 gtb dry sump 77. I guess it is gone - see video. I open fine. Ongoing cooling issues. The gauge shows varies between 90 and 100 degrees celsius. The other night the fans were off and no coolant came out when I was bleeding the radiator? I have been through 1000 posts about cooling in here, new core, hoses etc. So reinstall the savara (75 degrees) or the superperfomance (82 degrees)? thanks

 

Wiggling thermostat - ha ha - a true amateur! I have now installed a non wiggling original Savara thermostat and things are starting to get better - but the temp is still to high in queues and in town. The fans are in good shape - original ones - but when they kick in the gauge are showing 90 degrees celcius, so I am going to reinstall a new thermo switch. I got a new one from Superperformance but are not sure about the specifics of this? When the circuit closes and opens? The manual says closing at 84 - and opening at 75 degrees? Also the Savara thermostat are stamped 75 - in comparison with the new on from Superperfomance the are stamped 82 degrees.