I just had the t-lok rebuild put in the rear end of my car and I have Royal Purple Synthetic Gear lube in it and it still one tire fires like nobodys business. I have so much money invested in this piece of shit rear end for it to be smoking one tire. I have damn 4.10s and I'm running 225 junk ass street tires. What is my problem? What else is there to replace? Do I need a whole new posi unit?