Hello everyone, Thanks for all your inputs.
Here are a few pictures I took of my main sail (1 reef) at light wind.
Also here is a link to a video I took in the slot with stronger wind.
another sail - YouTube
(only the first 10sec actually show the sail though)
I really feel that the vang helped the sail shape although I think it was less windy at the time I took this video compared with last time.
I have yet to trim the shrouds but I do agree that they are likely too loose and probably increasing my weather helm somewhat. By the way, I don't have to hold the tiller 45 degrees or anything like that, it's just as if the boat is pulling hard on the rudder towards the opposite side. Just want to be clear.