I went for the version 2.2 stim.
Yes I am saving my finest language for when I connect the stim
I did read the construction manual several times before I began.
What I did not do was to cross-reference all of the ignition options available properly
The small transistors were rather delicate to solder, so, so easy to bridge the pins with solder.
I was there with my glasses on & using a magnifying screen, still was unable to see 100%.
I ended up asking my eldest to check them for me.
All ok though.