Exactly right Ramón. The stripes not quite as clear as in the pic, but they were there and it was similar looking size.
I tried the potato overnight, but forgot to shut the curtain in the room it was in so it was bright by the time I came down. I have spotted one of the tiny tiny snails on the other side of the plant though... I tried to get it off and lost it down in the media
Going to try the coffee trick tonight to try and get rid of anything that is left. Also thinking of putting cinnamon in the hole, the p-bulb on that miltonia that had a blister has not reacted baddly to the cinnamon on the open flesh so I'm going to try it on this. To be honest if I loose this p-bulb it won't be to much of a problem, the plant is otherwise quite healthy with other new p-bulbs and lead growths. I will try and save it if I can, but bo big thing if I can't.