I had exactly the same thing happen on my T100R. I think the factory overdrilled the holes. I actually managed to remove my pin by drilling a small hole in the centre of the pin. The drill was held in a pin vice and this in turn was fitted to a battery
drill. I believe it was a 1mm drill or similar size to great care and patience is required. When I had bored a reasonable depth I screwed in the smallest self tapping screw that I had in the junk drawer which had come from some electronic assembly. It was a cross point and I carefully managed to drive it home quite firmly. Once in place, I used a sharp pair of pincers to hold and lever the pin out. The relief as the pin came out could not be described here.
The new pin I bought was the same length so I had to get a friend to turn one up for me a bit longer.