MR816csx Rev-X used in 8 Pro

I am having a difficult time getting the Rev-X feature to work in 8. I have a mic in 1, headphones in 1 and monitors in the back hooked up to 1 and 2. It appears that I’ve activated morph and can detect a change in headphone sound - but zero reverb. Just wondering if anyone has used this feature and what they have found. I can get it to work perfectly in 7.5. Any pointers would be great. Thanks!

Direct monitoring checked? Driver is on “adat” hardware checked in mixconsole? Ni muting going on. Headphone volume ok? Mic gain high enough? Track is monitored?