Neck Body Join - P Bitsa - Luthier Woodworker Help or Advice Required

Slim Jazz Bass Neck (Heel width listed as 63.8mm) would like to meet Sporty Rear Rout P Bass Body (Pocket width listed as 63mm) for a lovely fit at the heel. (No Scratchplates or Pickguards please)... and I realy don't want a c0ck up on the first date! So any Basschat Luthiers, Budding Bass Builders or Woodworkers in South East London / Kent BR6 area-ish willing to take a look, assist or advise?... Please... Someone must be local and know-their-onions...

Thanks all for the above... and after a look about on 'tube... Looking at the neck and degree of finish, and it being the sticky up and out bit... and dont want to spoil the taper, or catch the fretboard... I think i will Danish Oil the neck, then use the finished neck to re-size the neck pocket. A little of the more of the shorter small G side... i think there is a proper name for this bit... to keep a nice neck n body edge with no step, and more of the longer larger side, and as best