Wannabe, is this still on the little sailor sweater? The consensus was that you were supposed to decrease coming and going on the next edges since the pattern said at every neck edge (or something like that). Did you decide it should only be at the beginning of the rows? When you are talking about,
As you are looking at the sweater I am working on the side of a V neck that is on the left
Do you mean that the sweater is, for instance lying on a table in front of you right side up? And you are talking about the side of the vee on the left?
If that is what you mean, and this is in stockinette it seems to me that the beginning of a row on that side of the vee would be a knit row and to get it to slant left \ you would ssk. On the way back on the purl side, to get the front side of the work to slant left and you are at the end of a row, you would purl 2 together through the back loop.
But it sounds like you are saying you are purling at the beginning of the row so I must be totally off.
If you mean the left side of the sweater as worn, it would be on your right if the sweater was lying on a table in front of you right side up. But then it seems like you would want a right slanting decrease /.
In St st that would be at the end of a row and you would just K2tog. If you wanted a / decrease at the beginning of a row on that side, it would be on a purl row and you would just p2tog.
I'm sorry, this may have confused more than helped. But I'm trying to help. Really.