I would if I were you. You might be able to borrow a sync kit from a local shop (Autozone, Advance Auto etc). The tricky part is the adjustment screw requires wide open throttle to adjust! So I ran mine and noted the imbalance, shut it off and adjusted the screw, then started to check it again. It took about 4 tries to get it right.
You can remove the vacuum hose on the right carb. The left one needs vacuum on the petcock so you'll need a T fitting.