I agree with both of the above; in theory, the bolt won't be heated too much, but in practice, it might be. I replaced mine with grade 12.9 allen bolts and greased them so residual loctite in the caged nuts wouldn't make it difficult to remove them later. If tightened enough but not too much, they won't back out during use.
This video shows a technique which I also used, and should work. I would add that it is also helpful to take a break from the bolt you are working on after turning it back in, in order to allow it to cool a bit before trying again to remove it. You have to be patient with some body bolts. Getting in a hurry creates more heat and friction.