Re: please help.. locking screw is stuck..
Here is what you may try. I have used this method and it always worked, plus it will break down any loctite that may have been used. Take a soldering iron and heat it up as hot as you dare. Then place the end of the solding iron onto the screw's head. Hold it as long as you can transferring the heat into the screw. Wait awhile and then try it, as rough as you are permitted. If this not work, repeat the job again. If you heat it many times, you should be able to take it out with your finger nail. One thing I would replace the screw with a new one.