Weblogic - How to modify Clustering "Default Load Algorithm"

Hi.

Firstly, sorry if my networking terminology is incorrect, I am not an EBS multi-tier expert.

I have the following problem.

1) My project is to add a second node to my EBS 12.2 environment. The second node is an external iRecruitment tier.

2) I used the following note

Oracle E-Business Suite Release 12.2 Configuration in a DMZ (Doc ID 1375670.1)

-- Section 5.1: DMZ configuration with a reverse proxy and an external application tier

3) The external tier is 99% working but I have one issue, every second connection attempt to the external URL redirects to the internal server.

4)  The reverse proxy in front of the external tier was configure by other employees, but as far as I know there was no load balancing configured on the reverse proxy