To turn the stem nut a half or full turn is an easy job and may only require a torque wrench applied at the proper number. I assume the B has a stem nut like all bikes I've ever worked on before. The hard part I would bet is gaining access to that nut under all that tupperware. Just looked briefly in the manual and looks to be a lengthy process. You are under warranty so might get the Honda shop to address your problem. I would not put the magic beads in, but would try and solve the problem instead. Another source of wobble can come from a poorly wearing tire, possibly caused from just a bad tire or from improper tire pressures. A new tire will cure that. Good luck.