I thought heavy vibs during gear up between doors 3 and 4 may be down to ALTN anti skid valves (used during this operation) that do not maintain correct pressure.
From memory, these valves should keep a pressure of about 600/900 psi on the brakes to get spin down in a suitable time.
Seem to remember, they may hold less than desired pressure, result is slow spin down, wheels tend to stop on hi spot in brakes and so instead of touch down at random tyre points, these tyres often touch down on same/similar spot and makes tyres/wheels more out of balance and even more vibs.
Apart from vib reports, if main tyres getting changed with these low spots and plenty of meat on rest of tyre, suspect ALTN anti skid valves.
I think the fault isol manual covers this well.