Picked up a Stampede 4x4!!

[lincpimp]

Ok, so I have about 3 full packs runs altogether. And one broken rear driveshaft. Actually, make that 2.5 runs....

So I decided that the old pre-3.3 maxx driveshafts were the best bet. Real easy mod, except making the hubs hold 6x12 bearings...

I really need to invest in a 12mm end mill bit. Any ideas where to get one super cheap, will only be cutting plastic with it in my drill press..

Anyways, I have one driveshaft done but cannot find anymore of the male splined sections. Have plenty of females, and some that look brand new. Anyone have any they don't want?