If you use a SuperSwitch...

[Mincer]

This is specifically with a Soloist body and a DiMarzio Super Switch:

I had some trouble with this, as even though the screws lined up, there were some issues...
Screwing it in tightly (like any switch) will bend the frame of the switch causing it to be very stiff. Loosening the screws by a turn or so takes the pressure off the frame of the switch, so it will feel 'normal'. Not so loose that it flops around, but just a turn or so.

Also, I was trying to figure out why the switch wasn't selecting the proper coils in the 'neck only' position (on a 2 humbucker guitar). I figured out that the switch wasn't making it all the way to that position withing the slot in the body.
So, I can either alter the slot for the switch, or somehow alter the switch itself. I decided on the switch. I used a Dremel to grind off the 'shoulders' of the shaft of the switch, so it doesn't hit the end of the slot on the body. This worked, but the switch shouldn't have those 'shoulders' on it to start with.
I'd suggest to look at other 5 way super switches, and maybe not go with the DiMarzio one unless you want to get to grinding.

While I love what is possible with the super switch (and the wiring I use also requires one magnet to be flipped in one of the pickups), you'd think that by now someone would develop a better way to wire these up...maybe add on small PC boards, or something for specific wiring.

 

[supertruper1988]

I just used wire cutters to trim that second wafer. I can take pics later.

 

[rockandroller]

Schaller makes a range of "Mega-switch" products with different circuit board configurations.
IMO, they have the best mechanical feel of any switch, but I am not really fond of the solderpads they use...

 

[supertruper1988]

Schaller makes a range of "Mega-switch" products with different circuit board configurations.
IMO, they have the best mechanical feel of any switch, but I am not really fond of the solderpads they use...

Yeah I have a few of these and they didnt inspire confidence. I am not sure that I am confident in the mechanical sturdiness of the Schaller switches. there have been several revisions of them over the years to attempt to improve them. Schaller makes great stuff normally but this seems to be a not great area of products for Schaller.

 

[Mincer]

Oh interesting, I didn't think of doing that. If you get a chance to post pics, that would be awesome!
You'd think these things would just 'fit'!

I've used Megaswitches in the past, but none do exactly what I want, and yes, the solder pads are silly, and a bad design.

 

[supertruper1988]

Here is how I do mine:

https://imgur.com/YPoZlCM

https://imgur.com/21zt4gX

https://imgur.com/5Pk8nrP

I find I still have to file the ends of the slot if I get a painted body but its not too hard with my set of cheeap files from Harbor Freight.

 

[Mincer]

Oh! That makes sense. That should be easy enough to cut. I didn't feel comfortable filing the slot and not damaging the paint. So I just grinded off the 'shoulders' of the switch shaft.

 

[supertruper1988]

Oh! That makes sense. That should be easy enough to cut. I didn't feel comfortable filing the slot and not damaging the paint. So I just grinded off the 'shoulders' of the switch shaft.

I make sure to file from the outside in with down strokes only. This way any chipping happens inside the cavity not on the face. I made that mistake on a cheap guitar I added a 5 way to and am glad I learned there