Getting any aircraft from fs2002 to run ok in fs9 is a job well done
I thought this would be an easy one to crack by sending you here ➡
http://www.fsgauges.com/
Its down at the moment,but worth saving and checking later
Some older gauges especially ones which were upgraded from 2000 or even 98 just will not show in fs9
I think you may have to replace the panel,plenty of options here ➡
http://www.tony.smiths.btinternet.co.uk/msfsgate_panels.htm
Or if you want to tinker,and know the names of the u/s gauges delete them from the panel config(make a note the dimensions of them)and replace with newer or stock fs9 gauges
You should just be able to copy and paste............but may have to resize them .......thats were the dimensions come in handy
Hope its of some help