Two hours to adjust the empennage fairing, the first picture show the initial state.



The next picture shows the fairing after cutting of 1/2 inch with a cutting disk, the grinding away the excess, before finishing the edges with a sanding block.



The fairing looks quite good, there is some small waork to be done at the back end. There is also a gap at the front left (not very visible on the picture).



Squeezing the part with the thumb is enough tp close the gap, so I think light sanding on the inside of the part should solve the problem.