What's up pig boy, you find a piece of candy in your pocket? lmao
don't worry about those ball ends. They will not break off. They will however strip faster and could strip out the heads of the bolts faster. Less surface area you know... But, it looks like the entire shaft is an allen key so if you strip the ball out or it somehow does break off, then just grind it down a bit and you have a brand new straight allen driver. The balls are nice for those really tight areas where you can't get a driver in there straight.
And here is what i would do about that servo saver. Pull out the servo and install the kit. I think that kit is way more required than that servo. then try to find out what is interfering. If it is just barely hitting the bottom of the servo or something then I would use a Flap Servo. they are very thin, not that powerful or fast, but perfect for something like this. I do suspect it's the servo mount in the front that is going to be the issue. In that case all you have to do is find a way to brace up the front of the servo.
Or you can man up and put a forward only kit in it lmao. Makes you a better driver. You crash, you take the walk of shame lmao.