im not so sure by what you said about disabling but..
to edit, just change the first number to your desire max lvl.
"99"
//Base - Normal and Baby Jobs
99,0:1:2:3:4:5:6:7:8:9:10:11:12:13:14:15:16:17:18:19:20:21:23:24:25:4023:4024 .......
same thing with the job lvl.
"50"
//Job - Soul Linker (Same EXP table as 2nd Classes & Baby 2nd Classes)
50,4049,1,144,184,284,348,603,887,1096,1598,2540,3676,4290,4946,6679,9492,12770,14344 ........