I had some work done to the bow a couple weeks ago....could not get broadheads to fly....went to the Pro Shop.....guy says I cannot use my whisker buisket.....it didn't fit...couldn't get true centershot...showed me with the laser tool?......so I had him put on my nap quick tune fork rest....I bought some new Montec's 100 grn......put them on my arrows..Maxima Hunter 250....and he had me shooting darts before I left....I am pleased with his work....still am......but now they are flying erratic again? I have not banged my bow or anything......I have switched the arrows with others from the same batch.....could this be it? Do I need a squaring tool? I figured if my bow is tuned, and arrows and heads come with .001 or whatever straightness....I should be able to shoot them straight? This is where this all gets confusing to me? Any Suggestions? Thanks