Hi. Can anyone help with a marrow problem please? The fruits were growing to about 2 inches and then falling off. I had about 12 fruits on each plant, so I cut most of them off, reducing them to 4 per plant. They have now stopped dropping off, but are short, fat and swollen...... Do I also need to pollinate the plants myself as they are in the greenhouse? I know they are telling me that something is wrong, but I do not know what they are saying... Any help is appreciated. Thanks!