find this in model/l2clan.java
public int getMaxNrOfMembers(int pledgeType)
{
int limit = 0;
switch (pledgeType)
{
case 0:
switch (getLevel())
{
case 4:
limit = 40;
break;
case 3:
limit = 30;
break;
case 2:
limit = 20;
break;
case 1:
limit = 15;
break;
case 0:
limit = 10;
break;
default:
limit = 40;
break;