Boatman,
Your right it is amazing that you have to jump through so many hoops at times. The good part in this case is that it turns out to be a little work and knowing that yet again Rinehart has done right by me again. Can't ask for much more really, even though it was a bit frustrating to start out.
Bisounours,
Pictures are really over rated on this one since I didn't take a before and after to really show much clearance was gained by doing this. Now for those with imagination here is the picture for you.
Imagine holding a 2 foot crow bar with a flat end on it and holding it against and just above the bung (12 O'clock if you imagine the bung as a clock face.) while having a 3 inch bold stuck in the bung pointing down. Now you draw the hammer back and whack the bar, put bar back in place whack it again rinse repeat 3 or 4 times and you notice that the wideband sensor now fits.
Generally the guy swinging the hammer has the smile on his face and is having fun except for the ohh chit I hope I don't ruin my pipe feeling.
I will try and post of picture of the clearance obtained once done.