I am trying to replace the brake fluid in the Front brakes and I just stripped one of the bolts on the master cylinder. The screw looks like a phillips head screw, but it is not. The screws are like butter and I for sure stripped it. I am so frustrated with this. At least I haven't wrecked my chance to ride this weekend, yet. JIS? What size? Where to get this tool locally? I am not the best mechanic, so any help for extraction would be appreciated.