A quick bearing question.

I recently got a Novak Havoc 3s / Ballistic 10.5T combo for my Traxxas Slash 2 wheel drive, and It has been alot of fun! I have really enjoyed this combination, even through some radio interference problems.

I now have another problem on my plate: the bearings in my motor are shot. I took apart the motor, and inspected the bearings, and they are all scratchy and rough to turn, and the front one occasionally freezes up.
When I drive my truck, the motor temps go up to 130* F in a matter of minutes, which is a big difference than before when it never used to go above 115* after a full bashing session.
(I have only had the motor for about 6 or 7 runs of one 7-cell NiMh each.)

My questions are:
1: Is there any way to replace the bearing, but not the entire end-bell? I cannot seem to figure out if the bearing is removable or not.

2: How am I supposed to lubricate the bearing? I have tried 3-in-1 oil as some other site has suggested, but nothing really seems to get "into" the bearing, it kinda just sits on the surface.

3: do the bearings usually go bad this fast?

4: Is there anywhere that I can get that plastic tube that I see in the Youtube tutorials for taking in and out the rotor? I did not get one with my combo (If I was supposed to) or is there anything else that might do the same job?

Thank you for your time.

and another quickie:
Would anyone know off the top of their head what ABEC rating the bearings that come in the end-bell are?
and what width they are? because I cannot seem to remove my bearing from the front end-bell, so I cannot measure the width.
I found a great ABEC 7 bearing, double shielded, that has the same shaft diameter, and outer diameter, but it only comes in one width, and I do not know if it would fit...

and more bad news for me:
I just figured out where all the heat was coming from:
When you are nice to the bearing, and apply enough horizontal load to spin it with your finger, it spins, but when it is on the rotor, it DOES NOT SPIN... so I was running with no front bearing :(
that expplains the heat.