A tiny bit of green or red on critical bearings that might rotate is what I go with.
In this case, I've had to deal with similar busted bolts on helis and cars.
For smaller fasteners, you can carefully Tig weld extra material onto the bolt to remove it with tools without having to try and drill it out or use a reverse drill bit. You have a window where the alum part acts as a heatsink before the entire assembly is heatsoaked. That said, you're really using very little current and, if done right, most bolts can be removed easily with vise grips barring the fastener being dug deep into a non threaded hole.
I had to do it on my first run E5 when they came with the weaker stainless servo screws. Those disappeared from kits quick. Had to pull a bolt from a friend's 7HV too where the prior owner had gone crazy on a frame bolt.
Where are you located Pastor?
