As far as your bow needing retuned. The paper tune showed a substantial rip, "low left" The low left tear is also typical of a stiff spined arrow. The chances are when the broadheads are screwed on there will be issues. The mechanicals will help some no doubt. But the bow tune should not change substantially over short periods of time. Unless, there is something terribley wrong with string and cable system, limbs or arrow rest.. Pay close attention on how you place your hand in the bow. Inconsistent grip can make a drastic difference in arrow flight and grouping.
Look up the specs on your bow (axle to axle,brace height correct string and cable length) have your chosen shop set the bow to them. After that is done it should be very close to the setting marks on cam, if it has them. With minimal twists to string and or cables should now bring the cam to it's optimal setting. Given your perceived time restraint paper tune the bow to a 1/8th of an inch nock high tear and sight in. This should only take the bow mechanic an hour or so. This will not be a "perfect" tune and will most likley need sighted in for broadheads but should give you a shootable bow. Not trying to hound you. Just want you to have a successful season!
