It's mostly the high E-String, and to a lesser extent the B-String, I traced the problem to the LSR Nut, basically what was happening was that the string was vibrating against one of the ball bearings and causing the sitar-buzzing, I since tried replacing the LSR Nut with a bone nut I had but that necessitated narrowing the slot, anyway I had to file the nut slots in the bone nut down to get the 1st fret action right, but things went pear shaped, looks like I'm going to have to replace the neck after all as I think it's gone bad, I've ruled out it being the bridge as it's a Super Vee Bladerunner bridge, since my Strat is in an unplayable condition now I can't record a soundclip of the sitar-noise, I can't also post any pics as my Digital Camera is not working properly anymore and needs replacing.
I might have to cut my losses and completely replace my Mexican Strat.
Might be a good excuse for me to buy and build a Strat kit this year.