Deliverance:
There was between 8-12 F3s converted to carry outboard pylons and stores as a trial, as the F3 wing only had the pylon housing, no control rod or operating arm.
Most of the outboard wing sweep control rods, etc came from the GR1 wings going through 16 FI wing mod program (provided the wings were only fitted to Cottesmore aircraft), the remainder were removed from TTTE aircraft wings as they did not have pylons fitted.
They were fitted at Coningsby in ASF, there was an issue with one rod that was not adjusted to its null point before doing pylon alignment checks, which rumour has it was a tad embarrassing at the time.