The prints I've been getting of the main part are in need of a few design revisions... The piece between the two brass tubes on the left of the main piece is having a hard time printing, So tomorrow I will take this part out since the piece is rather secure on the trumpet without it.
With the makerware supports, there is quite a bit of clean-up on the inside... But, as long as it's cleaned well, the piece fits.
The set of parts that are attaching the hand piece to the trumpet are really low profile and strong.
I will try closing the gap between the pink piece and the bottom of the brass tubes.