Have you tried simply holding your aim point half a second longer before you look to the end of the runway? The flight path to 50' hasn't changed, just your perception of it.
Cross the threshold, hold the aim point for a second, then look to the end would be my advice.
In your new position, can you see the White of the radome? My experience is that I adjust my seat on every flight so that I can just see the radome, then go down one notch.