Great stuff. We could really do with a full-length shot of it to see it in all its glory.

You may find that with the copper top, the pots are grounding the copper, which in turn is grounding the bridge and stop-bar.

Locking tuners - you've got far too much string round most of the posts. Less of an issue when there's no trem, but the idea is that you have minimal string wound round the post. To fit a string, line the hole up so that its in line with the string, pull it as tight as you can and then lock it. You should be able to get it up to tension within 1/2 to 3/4 of a turn of the post. Whilst you need 2-3 turns for standard tuners to keep the strings held well, it's the interaction between wraps (especially on wound strings) when you apply and release tension (such as bending strings or using a trem) that can allow a bit of movement to occur between the wrapped turns, allowing the string tension to change and so go out of tune a bit. With a locking tuner, all the sting holding is done by the lock, so you don't need any wraps around the post. Also makes it slightly quicker to change strings.