When I bought the plane, the vents had already been removed from the plane. The open scat tube is secured just under the altitude control knob.
I have a friend with a maker who I think can make a more aesthetically pleasing delivery method than an open scat tube. I have contemplated asking him to take a look at it.
I'll try to attach a picture.
https://linksharing.samsungcloud.com/ql0Xti7VPKx2
Rick