Still running strong !
I replaced both front and rear derailleur with 2nd hand Campagnolo (Chorus on the rear, Record on the front)
I also replaced the cheap brake pad with swissstop, now I can set them with a little bit of toe-in, so no more squealing !
To accomodate the 5 speed freewheel (and avoid overshifting in the spoke), I had to replace one of the limit screw with a longer one