Train Horn Mounting Brackets

Printer: FlashForge Creator Pro
Rafts: No
Supports: No
Layer: 0.20mm
Infill: 50%

Notes:
These brackets designed to fit: http://www.thingiverse.com/thing:979623
(Uses longer screws for inner 3 on each horn and one additional for clamp; changed from #6-32 x 1/2" to #6-32 x 3/4" or 1" - for a total of 7)

(My first design from scratch and upload ever - suggestions/comments welcome)