Leaderboard

Proper nut files are extraordinarily expensive, and the cheaper ones not really good at all for that job. If it's just to get rid of the 'jerking' of the string over the nut when tuning, a light sprinkle of graphite powder does a fine job. Some folk get the graphite from quality pencil lead, but it's easy enough to obtain. Amazon propose various versions, as a little flaçon of 50ml for 9€86, or a 1 litre tub for 10€10, and everything in between. Try that first, if unsmooth tuning is the issue..?

@Musical Mystery Tour that goldtop with P90s .

On a strat-type vibrato it would effectively lower the action a touch and make the strings ever-so-slightly flatter in pitch because it would lengthen them a bit and lower them, meaning you might have to raise the action a touch and possibly adjust the intonation slightly' on a Bigsby, it'd make no real difference since the lever action is after the bridge (although as you say, it's a floating type, so not a Bigsby). I do that on my LP with a Bigsby - i.e. lock it back by spinning the vibrato arm all the way round to jam it in position on the bck of the mount because I have that vibrato on the guitar for the effect extra mass of it has on the tone, rather than for actually using it. And because you have to have at least one LP with a Bigsby on it (I'm pretty sure that's the law):

I've realised in the last few years that I feel more comfortable on a 44mm wide nut than the standard 42mm. This has lead me to commission custom strat necks with ebony fingerboards from a trusted supplier here in China with those dimensions which, more or less, match those on my Yamaha MSG. And the bodies on those strats are lightweight mahogany, making overall for a wonderfully playable and comfortable instrument. Nearly worthless in terms of resale value but up there with the best for effortless playability given I've moulded them to my taste. It's way cheaper to go to a city and spend a day trying stuff out in various music shops if you can, than doing what many of us have done. Spaffing loads of cash on stuff that we decide ultimately isn't for us. Stick to cheap or easily customisable stuff until you settle on something that really works for you.