I have one of these and I can confirm that it is great bit of kit.
I have used it on 350Z UK and JDM, 370Z and R35 GT-R plus many other non jap cars.
Cost me £59.00 to my door.
Alex
I only sold the new parts side of the business to Clark Motorsport.
I am presently dismantling 3 x 350Zs at the moment so should have most of what you require.
Any new parts required then just give Clarks a shout.
Alex.
You remove the trim and the air bag as one unit.
However there is one bolt/nut which holds the air bag to the body and this has to be removed and this will probably be the bolt/nut which is causing your removal issue.
Alex.
Sorry to read this, however not surprised to hear this in slightest where Macklins are concerned.
I gave you good informed advice earlier in this thread, pity you never took it.
Hope that you get your car back soon.
Alex.
I have been trying to contact them for the past 10 days.
Tried PM, Email and phone.
It was a substantial order of 8 x MPSS for the R35 GT-R, circa £2500.00.
Had to place the order elsewhere this morning.
Alex.
As Lexx has said, probably just the dirt shield touching the rotor, however I would take it back to the garage for them to rectify there shoddy workmanship if indeed this is the issue.
Alex.