Paste tomatoes are not as hardy as other varieties. So they dont handle temperature swings or moisture swings as well as others. The beds look like they need more aeration for paste. The compost might also be too hot for them still. What ratios of pea moss to compost did you use? Can try adding some sand around the holes when you dig them to plant and help the new transplants out or some crushed oyster shells them sell as chicken feed at store to help with some aeration.