Hmmmm interesting, thanks for the post

I paid £369 plus £100 each leg deposit per complete strut from air dominance a couple of months back as i had a leaking driver front airbag. Audi wanted £1500 for the single bag!! I got both fronts done for less than half. Units comes with 2 year warantee and when you return the units (free of charge) you get the £100 per unit deposit back.
I had replaced my compressor previous but obviously did not solve a leaking airbag.
My compressor still kicks in lots during a drive which it shouldn't so I will be checking the distribution valve block next and double checking the compressor fittings to be sure.

Ah brilliant, thanks for the info Rick

Still got this slow leak, so will probably try you're route