So pulling the flange off to replace the seal is not as easy as it sounds?
I would leave the whole thing alone but because my RMS has sprayed oil everywhere I don't know if the IMS flange is leaking too...I suspect it is, but not nearly as much as the RMS.
For me the whole IMS thing is blown way out of proportion, there are lots more ways an engine can fail other than that bearing..a broken cam chain would do the same..but for me I have snapped off 8 of the 12 header bolts removing the exhaust system to change the RMS.
I had to take the headers off because the 3 bolts at the next join were non existent and no way of drilling out what was left of them. I nearly scrapped the car because of these and they are not something mentioned regularly.
In the UK, my car a 99 2.7 70k miles full PSH 1 owner, perfect condition is worth about £5k. A dealer offered me £3k p/ex because of the oil leak from the RMS.
Here she is..£5k!