My SLS pump is leaking at the seam between the two pump halves. I have seen this thread:
SLS Pump Rebuild Kit or Components?, and I replaced the o-ring that is red in the picture TWICE and it is still leaking.

In the seal kit that I got, there is a second thicker o-ring. In the picture it appears that the outer case is aluminum and the inner part that has the channel for the o-ring is steel. I'm thinking that the steel part is sealed to the case by a second inner o-ring. Has anyone removed that center section? Any advice?