It's definitely a leak lolView attachment 49885
Well I got my 70a rmm last night and just got done installing it today. The rubbing still happens somewhat and that nasty airy noise is still happening. I think my downpipe is leaking where the head meets the downpipe so I'm going to tighten those nuts tomorrow and see if that helps. Probably throw some loctite on too.
Ouch! I don't think tightening the bolts is gonna help @kseriescivicIt's definitely a leak lolView attachment 49885