G'day John, would be surely not the same around here without you mate so I hope you can recoup and come back.
For the unanswered thread issue. It happens on all forums, a lot of people simply do not know the answer and with the likes of some very knowledgeable members in their specific areas we have on here they miss posts of course and it gets pushed down the line.
Now that we have the new software here I can also look into a dedicated "non answered posts" link where members can click on to see all of the unanswered threads to see if they can help out.
I've been wanting to do this for years but was limited by the outdated software but leave it with me and I'll see if I can get it happening.