WOW. Never looked in the Advanced tab of the Standard Material Node. Now that adjusting the reflection of the Dome Light is working as expected, it's giving me the same result as adjusting the Intensity.
My thought was that the internal reflections were not behaving correctly as they appear much brighter than the external reflections.
THNK YOU!!! for your help and speedy response!
Can you explain why the internal reflections appear more brighter? or more intense?