[Swifty1638]

Joe is right. It does ride on oil, but after discussing things with Chad, This theory was formed:

the comp wheel was a BAD pairing for the turbine wheel. Imagine trying to play tug-o-war..with a 2 year old..they are the turbine wheel, and you are the comp wheel. Anytime i'd hit boost, the comp wheel would "suck" itself towards the comp cover, forcing the oil out of the thrust bearing area, and the thrust collar would then ride/wear against the soft brass metal the 270 bearing was made out of. When letting off the throttle, the shaft assembly would "shutter" back n forth, causing more wear. I have the old thust bearing/collar that shows a bit this to be true. So, I think the new setup will hold together just fine. Hopefully, no other issues with anything else on the car.