If you got the manual...it has in there what you have set....
There is 4 settings ( i think)...1 is the factory setting, which in the manual it is for MAME (PC) the rest is programable modes...
You can dload the configuration file for MAME on the X-arcade website (under the customer support section)...throw that in the respectable file and if you go to default options ( i think)...you have a pulldown and you select "x-arcade"
( i think)...means I'm like you ...I am at work...
Ive never had to use the programable modes...( but I will eventually when I set up my Mugen Games...)
You CAN do what you suggested...but you would be doing more work than necessary