Hi Nayanak . . . replacing the switch yourself is possible, here's some tips

Firstly, if you cut any wiring out of an US you'll void your warranty...
To replace the standard plastic latching switch with a 16mm av switch you will need to drill out the switch hole with a 16mm drill bit, best to do with a drill press...
Momentary to latching converters work great, but when duelling they can be prone to accidental switching off because all you need is a light press . . . momentary switches work perfect with the Obsidian soundboard because a long press is required to switch off and not as likely to happen during duelling...
It is possible to use the long latching switch in an US hilt . . . you can buy high bezels elsewhere . . . or you can bend the pins (be careful because that can ruin the latching mechanism inside the switch) . . . or you can solder the wires to the side of the base of the pins and cut them off (I have done this, but it is very fussy soldering work) . . . also, you can find non-illuminated latching av switches that are shorter and fit easily, I have found some on eBay and elsewhere...
And yes, you can buy pre-wired switches and m/l converters, but this is where you should do the math . . . by the time you spent that money on pre-wired things and shipping you're probably half way to just buying your Scorpion with sound and a non-illuminated av, so it could be false economy...
Having said all that, I've been modifying my US electronics for a while and get great joy from it . . . I started with a simple stunt installing a m/l converter and just did more and more, so if you want to give it a go it is possible . . . here's a link to my first, there is some wiring diagrams on that thread too . . .
http://www.saberforum.com/index.php?topic=22628.msg348595#msg348595cheers
