I have dealt with McKenzie for quite a while and if the boards are specced correctly, then they are really good. Had a set for the Taipan, and for that they were built a bit differently (as requested) and never had any problem over 3 yrs. Got a set for the A, and these are a lot lighter but you need to be careful in certain cases otherwise they will snap, eg do a big round up in windy conditions and not ease the main first into it.

In relation to spanner, as I said either design flaw or bad installation. I was rather shocked how bad it was, but it was at a stage that hard to tell the initial reason why.

And yes, the Blade c/boards are an inch or 2 deeper, and those boards are still quite good. But comment was on a Viper/Capricorn style deep high aspect board.