Welcome to the forum and irv2.
Here is a
Brochure and
Owners Guide for coach your looking at.
There are QT's links below in my signature that will have many more links related to the Newmar.
I will see if I can find the info on the table your talking about.
Newmar Part #022171
This is info on a 71" Newmar Part # 022171--table set up but they also talk about a 75" #022181 table in the parts for the Euro table.
Have you looked in a drawer for the extra leaf if 75" table.
If you have the coach build number or the Vin# of the coach we maybe able to find what they installed for that coach in the
COM_NET link on what was in build order. It would have at least one extension normally.
If that fails you can
call Newmar for the answer.