If you're a right hand shooter and the arrows are impacting left, it indicates spine that's too stiff. Though 60-65 with 145 grain heads looks like it should work on paper, the proof is in the shooting. Might you have some lighter spine shafts or heavier points you could try, like 175 and 200 grains?
Of course, form problems could also lead to a left impact. Plucking will usually send the arrow careening to the left. If your glove is creased and not releasing the string cleanly, that could lead to erratic arrow flight.
Too, if you've never shot a bow cut proud of center before, you may just be holding the bow/arrow off target. Before you release, look down your arrow to see if it's pointing at the bullseye? If not, you just need to adjust your hold.