Pelican IMS Upgrade failing?

[Jamesp]

First, take off the accessory belt and see if the noise goes away. If it does, it's not the IMSB. If not, the IMSB is in play.

I don't see the Pelican as a complete upgrade. The bolt is clearly better as the stock bolt necks down in what, in an ivory tower analysis, would be a great stress reduction cross section, but what in the real world equates to begging for a stress failure. The Pelican bolt is far superior, so much so, I bought the kit just for the bolt. I was not impressed with the NSK bearing itself as it was not a sealed bearing and was steel. I replaced it with a sealed steel high temp Nachi 6204.

You also did not state if you replaced a double row with a single row, which the Pelican kit does. I would not make that move. In any event the bearing is equivalent to a timing belt and needs to be replaced on a regular basis. If yours is making noise, don't play around with it, replace it.