Hi Simon. Not that I remember, however it's a bit redundant now as I'll explain.
My first attempt ended in failure. The usual result when I attempt anything new.
I think the neck was not mounted correctly which in hindsight meant the 2mm movement.
At first, I simply couldn't get this damned thing to stay in tune.
Any bar movement and it would go out. Very frustrating.
Thing is, with all the extensive reading I've done found that those with a negative experience with the Trem-King seemed to have spent little time fiddling with it.
Anyway, As I just happened to have yet another $30 guitar handy (here's one I prepared earlier) Decided to roll back to square one.
Having a second go, Noticed all the little details that were missed in the glow of anticipation the first time around.
The 2 outside holes of the 6 tremolo mount were in fact the ones to use.
This time it was a case of routing out about 5mm of wood from under the rear (leaving the top 3mm of the cavity hole as is.
Then chamfer some of the wood from the front...(just as I pictured in post #3).
I used the same neck from experiment 1.
This time I noticed that the bridges could be set quite low.
Here's the 2nd iteration.
From the back...
I'm using some ugly but functional roller string trees plus a Tusq nut.
One thing I may require is a set of locking tuners.
I can now tune it up...perform some dive bombs and it returns to pitch.
Pulling the bar up though still leaves it a tad sharp, but I've got some further investigations to go.
So far it's been quite good. I like that the action stays put whilst using the trem.
cheers, Mark.
P.S. The keen eyes will note that I only have 5 strings.
Experiment 1 did involve 2 broken 'E' stings.