Difficult one.It's only worth what someone is prepared to pay for it.We all get emotionally attached to our Zs and know what we think they are worth to us but that sadly may not be what people are willing to pay.GLWTS.
Make sure the plenum ones are torqued correctly. I will have a look tonight as I may have a fitting plan from the set I purchased a couple of years back. I keep most things.
Created another thread earlier but will say it again Thanks for organising everything Dan including the trophies at your own expense.Great to catch up with forum friends.