A good set of tools are essential to any build, any type of mechanical work. The L-Wrenches that are supplied in many of the RC kits are junk.
Do yourself a favor by investing some money in good tools. A hardened tip allen wrenches are a minimum. Many wrenches are hardened tips, but the other aspect of these kinds of tools are precision. If the allen driver tips are hardened but are made with loose tolerance, you'll most likely get a tip that are too small for the hex head (even though it's labeled as the right dimension).
I experienced this issue since I used to use L-Wrenches that were supplied in the kit. Started to dump a lot of money in screws and time (having to dremel out a slot to use a slotted screw driver to back out a scew).
Since then, I always use MIP's Thorp-series wrench. They are the most pricey, but I have not stripped a screw head since. I can't speak for other wrenches, but I have abused and used MIP Thorp wrenches time after time, and the tips still look like the day I bought it.
A precise, hardened tip screw driver will prevent your screw heads from wearing out, when the screw heads aren't wearing out, it prevents your tool tip from wearing out. It's a cyclic kind of a phenomenon...
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