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Yep. The sensor being in a different position could mean nothing at all. Your old cat could have been off an R.

Nice to see you're making progress Paul. Good work.

Cut them off with a grinder but try not to scare the flages

Probably cat or rear lambda but also worth checking the exhaust manifold bolts as they can work loose sometimes.

A bit of careful testing, good idea to dip your toe and see what happens, think I'll be doing the same as my head is still hurting from a flashing overload from what I've read in the last few months,...

Get yourself some PlusGas. That stuff will release anything.

Here's the ipd link.

http://www.ipdusa.com/techtips/10003/oxygen-sensor-testing

He did miss out the correct way bit.

That doesn't sound like the most scientific way of testing them.

Are there any codes showing ?

There's loads of different style rubber hangers available...
pop to your local tyre place or somewhat....or have you tried bending the hanger rods

stainless welding wire heated up untill its cherry red works a treat.

yep I tried to use a dremel on a plastic headlight to see why it was loose inside and it was a nightmare- melted and fought me all the way even at slow rpm.

I tried using a dremel on mine - bloody nightmare. Bit's of molten plastic everywhere lol. Got quite stingy so I broke out the 4 1/2" angle grinder :D

It's not hard to get a half decent cut with...

Mark the cut out with a dremel first, or better still....use the Dremel!!