Sometimes you get a shy eater as well. Both our males (BP and Woma) were at first. We just had to kill the food and place it in their hide with them. Come back an hour later and it was gone. Most of these babies spend the first couple weeks of their lives in a rack and bin system composed of opaque tubs. They are not used to any visual stimulation nor interaction. A lot of the breeders I know just place the mouse in the bin, close it and come back later to see if they have eaten. That is where i got the idea of placing it in their hide and so far it has worked for both snakes. The Bp is now a voracious eater and the Woma is well on his way to becoming one.
As for the spider gene and it's "quality of life", well it is a hotly debated topic based mostly on feelings and beliefs and not much fact. In the end if it eats well, sheds well, poops well and does not get sick any more than any others then it's "quality of life" is as good as any other morph as far as tangible proof can tell.