Another IMS bearing thread

[Walter White]

Is there any chance of drilling a 1/16" hole in the IM shaft from the sump?

[Jamesp]

Not sure what you mean. I would not drill the IMS tube between the end fittings from a structural consideration standpoint. That's not to say it would certainly lead to a failure over time, but it's not a slam dunk it won't start a crack and fail the tube over time.