1717 Parts?

[ruudxd]

I bought a Traxxas Big Block, from the X01, but how do you guys mount it?
In the exploded views of Traxxas, they use two 3x12mm screws, but if I put even a M4 screw in the motor, it is a bit loose?
I can move it up and down a little bit, do they use standard screw sizes?
The threats are very good, all the black anodization is still on it.

My old 1717 has that to, but my old NEU's were much thighter?

Or am I worried about nothing?

And how do you guys mount it on the RCMonster motor mount?
I think the old owner of the car screwed it up a bit, because I can not get a 4MM caphead in it, because it doesnt hold it, there is no " lip " where the cap head could hold against.

I tried to search this, but the search function gives a error..