If you use Renewal, change the line below by changing the CHANGE HERE to the desired level, which in your case is 120. Remember that this file is set up to the maximum level of 255.
In line "//Job - Renewal 255 Levels", normally line 21.
//CHANGE HERE,0:1:2:3:4:5:6:7:8:9:10:11:12:13:14:15:16:17:18:19:20:21:23:24:25:4023:4024:4025:4026:4027:4028:4029:4030:4031:4032:4033:4034:4035:4036:4037:4038:4039:4040:4041:4042:4043:4044:4045:4046:4047:4048:4049:4050:4051:4052:4222:4225:4226:4227:4228:4238:4001:4002:4003:4004:4005:4006:4007:4008:4009:4010:4011:4012:4013:4014:4015:4016:4017:4018:4019:4020:4021:4022:4054:4055:4056:4057:4058:4059:4060:4061:4062:4063:4064:4065:4066:4067:4068:4069:4070:4071:4072:4073:4074:4075:4076:4077:4078:4079:4080:4081:4082:4083:4084:4085:4086:4087:4096:4097:4098:4099:4100:4101:4102:4103:4104:4105:4106:4107:4108:4109:4110:4111:4112:4211:4212:4215:4218:4220:4223:4224:4229:4239:4240:4241:4242:4243:4244:4190:4191,1,112000,355000,615000,917000,1253000,1595000,2007000,2430000,2868000,3420000,3863000,4504000,4998000,5769000,6321000,7254000,7870000,9015000,9530000,11072000,11848000,13467000,14337000,16243000,17216000,19446000,20781000,23070000,24453000,27568000,29118000,31820000,34125000,37048000,40204000,42972000,45937000,49110000,52696000,57158000,61305000,67167000,72285000,77647000,83624000,91113000,98548000,107630000,119077000,131668000,145518000,160753000,177511000,195944000,216220000,238523000,263056000,290042000,319726000,324726000,329726000,334726000,339726000,344726000,349726000,354726000,359726000,364726000,369726000,374726000,379726000,384726000,389726000,394726000,399726000,404726000,409726000,414726000,419726000,424726000,429726000,434726000,439726000,444726000,449726000,454726000,459726000,464726000,469726000,474726000,479726000,484726000,489726000,494726000,499726000,504726000,509726000,514726000,519726000,524726000,529726000,534726000,539726000,544726000,549726000,554726000,559726000,564726000,569726000,574726000,579726000,584726000,589726000,594726000,599726000,604726000,609726000,614726000,619726000,624726000,629726000,634726000,639726000,644726000,649726000,654726000,659726000,664726000,669726000,674726000,679726000,684726000,689726000,694726000,699726000,704726000,709726000,714726000,719726000,724726000,729726000,734726000,739726000,744726000,749726000,754726000,759726000,764726000,769726000,774726000,779726000,784726000,789726000,794726000,799726000,804726000,809726000,814726000,819726000,824726000,829726000,834726000,839726000,844726000,849726000,854726000,859726000,864726000,869726000,874726000,879726000,884726000,889726000,894726000,899726000,904726000,909726000,914726000,919726000,924726000,929726000,934726000,939726000,944726000,949726000,954726000,959726000,964726000,969726000,974726000,979726000,984726000,989726000,994726000,999726000,1004726000,1009726000,1014726000,1019726000,1024726000,1029726000,1034726000,1039726000,1044726000,1049726000,1054726000,1059726000,1064726000,1069726000,1074726000,1079726000,1084726000,1089726000,1094726000,1099726000,1104726000,1109726000,1114726000,1119726000,1124726000,1129726000,1134726000,1139726000,1144726000,1149726000,1154726000,1159726000,1164726000,1169726000,1174726000,1179726000,1184726000,1189726000,1194726000,1199726000,1204726000,1209726000,1214726000,1219726000,1224726000,1229726000,1234726000,1239726000,1244726000,1249726000,1254726000,1259726000,1264726000,1269726000,1274726000,1279726000,1284726000,1289726000,1294726000,1299726000
This code will make the job level you set valid for all (including 3rd and expended) classes.