Yea after we had hashed back and forth about which diff might be the bad apple, I desided to look at it a bit closer than I had up to that point and noticed that when I tried to turn both rear wheels at the same time it was locked completely down and even after twisting just a little extra pressure on it there was 0 movement at the input shaft of the diff. at that point there was NO doubt in my mind that you had hit the nail right on the head and it was clearly the rear diff that was busted.
What had thrown my off a bit at first was the fact that the front diff wa salso locked down in the begginning and this is what initialy made me think it was the center, because I thought..... there surely wasnt anyway that both front and rear went bad at the same time and since they were both tied to the center......wala it had to be the center! but after twisting a little back and forth on the front wheels the front diff came free and is working like it should but yet as you ahd explained the issue was in the rear basd on what I had described.
I filled out the wrranty form on Redcats web site and also sent them an e-mail directly to Support@Redcatracing.com
with the same pics included as I posted here in this thread, I also gave a detail explanation of what happened also just as I had done on the forum, so I figure I should be hearing something back from them in the next 2-3 days hopefuly and I'll see what they say about the warranty of my pinion gear, I hope they will send me 2 gears if they warranty it so I can have an extra on hand if the front one is bad like the rear and I wont have to go through all this again.
I already pulled my diff assembly apart and cleaned the red grease off everything and added some 7000 wt Silicone oil and reassembled it, I know some say put 2000 or 3000 in the rear and put 5000 - 7000 in front diff. but I'm not looking for and edge at a race track since we dont have any around here anyway, I just figured the 7000 would give me a little better traction by cutting down on the give in the spider gears.
your advice made me question myself and therefore saved me some trouble jacking with the center gear box when it wasnt needed right now.
I hope Redcat will take care of this for me, since it was clearly a faulty part.