I had Ram 1000 that had been settingfor a couple of years.
I made sure the pump was not stuck, inmy case it was gummed up. I used a battery and ran the pump bothways until it loosened up and kero flowed.
I then ran the pump to pump fuel to thebearings until they freed up, I moved the wheel by hand.
I then started the turbine and let itidle for 5 minutes, before running it up.
I have not had any bearing problems.
Hope this helps.