RE: High left tear?
How high is the tear?How much left is it?A little tear is good but a lot isn' t.
You may have good groups with field points but when you install broadheads you will see a problem.
I know you are using a fallaway but it is possible to have some fletching contact so that would be the first place I would start.Also I would move the knock down to see if that would help get some of the high tear out.The left might be a spine issue.It is possible that they are a little light in spine.
Now with the cam change.Just sitting here and reading your post.I would tend to believe that this is where the problem really is.How does the cam and idler lean look.Are you possitive that the strings and cables are correct?If their is lean on the idler then you need to twist the cable where it attaches to the axle to try and pull the idler back straight.If it is in the cam there may not be much that can be done.