I have some beef tomatoes (marmande I think) in my polytunnel and after a slow start they now have plenty of fruit, however the first tomato on each plant looks wierd, it is partially burst and you can see the seeds, they seem to have grown around the stem and look sort of inside out. The rest of the toms loook fine and i wondered why this happened and whetyher i should remove deformed fruits so as to let the plant put all its energy into feeding the healthier looking ones