Removing Sv650 throttle stop and rounding screw thread?!!

[ReadySalted]

Hi all,
I'm in the process of removing the throttle stop from my bike, but the screw that holds the throttle stop to the throttle bodies is tight as a ducks arse, and started to round quite badly.

I have used a hacksaw blade to cut a notch in the screw head so I can try a flathead screwdriver but no joy with that, or any of about 10 different size and types of phillips. I'm a bit clueless as to what will remove the screw.

In the morning I will put a bit of heat around the screw with a normal hairdryer and see if that loosens her up, and failing that I will use a thin driller to cut a tiny hole into the centre of the screwhead so I can jam a screwdriver in there nice and deep.

If that doesn't work then I'm fresh out of ideas, so if anybody has any advice/ ideas on how to get this bitch undone then please let me know!!

[CaNsA]

Try tightening up very very slightly, just enough to crack the seal that has formed.

If it moves, then you should be able to remove the screw.

[ReadySalted]

Thanks cansa, I tried that but the screw just seemed to start rounding the other way. It's as if the screw is made of plasticine and its welded into the whole.

[CaNsA]

It shouldnt round off if you are using the correct screwdriver.

[Eddie Hitler]

I know it sounds weird, but try welding a 1p coin onto the rounded head. Once that's done, grab a teacloth and cover it as if you were opening a tough jar in the kitchen.

Works wonders.

[ReadySalted]

Screw undone and throttle stop plate removed.

I hate to leave these threads like cliffhangers cos it doesn't help anybody in future, so for anybody who reads this thread in future;
I used a thin small drill bit to drill down into the screw head. It was slightly bigger than I should have used but managed to dig down into the head enough for me to get a very good quality phillips screwdriver into the screw, but was just starting to round the crosshead off as well.

So I hammered the screwdriver into the head, and gave her a very hard push and twist and hey presto she began to undo.

Will disguard the old farked screw and replace with a new one.

Cheers for all the help.