RestoTII

I'm trying to make a TID for my 87TII and I'm having probs fitting the AFM and air filter, and also keeping the AFM flat so the flapper doesn't open and close when I hit bumps. Has anyone done a TID themselves? I have 2" ID 90° rubber hose going to PVC, but that makes it too long, so I used all rubber with PVC only as a coupler. I still can't get it to line up right and sit relatively flat. can anyone help me out, please?