OK, so I decided that I don't like my home brew Irish stout poured with straight CO2, so I went and got myself a Guinness faucet and a bottle of 75/25 Nitro CO2 mix. Pressurized my corny with 30psi for a week and a half now. I poured my very first glass and got a tiny cascade effect, but overall pretty good mouth feel, silky. Now I have poured two glasses since and neither has had
any cascade, and very poor mouth feel, they feel carbonated. Now this being my first experience with trying to nitrogenate my stout I feel I may have made a mistake. Did I do the nitrogenation part right? Any thoughts suggestions would be great, Thanks in advance!

Was the stout carbonated before you added the nitro? If so, you probably have over-carbonated (for your purposes anyway) stout. You might want to bleed it off for a week or so, and then try to re-pressurize with the nitro mix.

I should point out that I've never actually used nitro, so please let me know if I'm off the mark here..