When I first fitted the pitot tube, many months ago, I made a mistake. I installed it about 500mm closer to the fuselage than it's supposed to be. This creates a potential problem in that the airspeed indicator could become affected by wash from the propellor. It's very important that the pitot be in clean air.
Once I realised my error I did a lot of investigating. I found that the position where I installed the pitot should still be okay, and should be unaffected by propellor wash. But I'm not happy with "should be okay", so I decided to shift it while I still can.
Moving the pitot mounting post wasn't too hard, and I got it done quite easily today. The problem is the skin .... it has a cut-out to suit the pitot mounting post, and there's no way around replacing it with a new one. I've contacted Vans for a quote. Is not going to be cheap, but I need to do it for my own peace of mind.
The pitot tube needed to be moved to its proper position
Match drilling the pitot mounting post bracket to the wing spar and rib
