I don't know, but finally I ordered the option 2 weeks ago and it turned up in the post on Saturday. Since it was the UK bank holiday weekend I figured I do the bulk of the building now and finish it over a couple of evening during the week.
So off I went forgetting that two years later after a stroke and the hands and eyes combination is not the same as it used to be. So I was slowed down with that handicap but I did usual couple of an hours work, then have a rest for 20 minutes and carry on. Soldering is definitely an art which takes a while to master, but after a few hours practise I was back up and running.
By Monday evening I had soldered the bulk of the capacitors, diodes, transistors and resistors. I was amazed that I only did two mistakes which thankfully I picked up on virtually straight away, I still have the toroid's to wind and a few components to add but the main work has been done.
Sitting on my old 1970s anti static disc, the bulk of the work has been done.
One thing which proved invaluable to me was my magnifying lenses headset which the XYL bought me as a Christmas present a few years ago! It has without doubt proved its worth, so if your like me and the eyes are going and you like a bit of soldering, modelling, or another hobby where the eyes are needed, get a pair of these!
Hopefully I'll have the KSB2 installed and working by the end of the week and then my attention should be turning towards a service on the Hexbeam which should have arrived by then and preparing for the tilt over mast which should be appearing during the middle of the month.