printed well doesn't work very well

Hello from Canada good sir :) I love this model so much. It does exactly what I need, printed and fits together perfectly :D I just got my P1S a week ago and after using it for a week now I have a small( I think lol ) request for a modification to the top of the chute. After doing some smoke testing with incense I found that the exhaust fan pulls air straight from the chute and then through the filter and out. Even with the door open at any degree I can get no suction from the door with the exhaust fan at 100%. So it just sucks everything right from the poop chute. So I was hoping that you might be able to modify the top of the chute so it encloses around the whole chute. I think it would work perfectly if it matched the same plane as where the back of the chute is against the back panel. I feel like I would just use some super thin foam tape around the chute exit on the body to make a bit of a seal. I tried to rework the model myself but I don't have the skills :(

absolutely wonderful works perfectly :)

best option for this I can find I've tried 4 different ones and this is by far the cleanest and does the job perfectly printed in petg cf