Hello I just bought a new servo and the screw was tight in which I stripped the screw. I ended up taking out the screw but ended up stripping the metal tip -spline... How much to fix this? The 2 I bought have extremely hard screws to take out. It seems like it has loc-tight. Any ideas? Please let me know. I may have to return the other servo because I can't take of the screw. Please let me know. Thank you.