Silicone Thermostat Water Neck Housing Gasket attempt

I found in the past that it’s easy to get part (just a few thou) of the thermostat flange sandwiched between the non recessed part of the housing and manifold. Naturally this will lead to issues, so I always reach in through the neck and make sure I can still turn the thermostat and keep it centred while tightening the housing. Just my 2c worth.