In response to your trimming of the wheel axles I do not as I sometimes use spacers to make the front end wider, which would not be possible if you cut them. I use the standard Tamiya universals up front and the hardened rear axles. I also use spacers on the rear for the same reason, although sometimes I actually fit 4mm hexs for more rear end grip.
I also use Tamiya alloy front knuckles. The only part I have broken up front is the c hub which I have done on both sides when I have hit something at the wrong angle or had a hit at full noise.
Hope that helps,
Calvin