what you are trying to do is making single strip skills able to bypass FCP right?
have you tried this:
not sure if this will work, but is worth a try, if that "if" statement is the cause causing Strip skills to not strip
then it should work by just removing from the "if" the skills you want to make FCP proof.
//Special message when trying to use strip on FCP [Jobbie]
if( sd && skill_id == ST_FULLSTRIP)
{
clif_gospel_info(sd, 0x28);
break;
}
try this and tell us how did it work, i may be wrong but still is worth a try.