I like that. Really good looking build and nice touch with the washers.
Thanks Chris, the washers idea came out of necessity really, as I knew it would be quite tricky to replicate the pattern around the valves by hand. So I came up with the washer idea instead.
The holes are matched underneath to let the air flow, also I got 6 countersunk screws to replace the ones in the kit and that enabled me to cover up those with the washers too.