1) – Early bushes were sintered bronze which made them porous and allowed oil to penetrate them. If the replacement is solid brass then drill through in line with the oiler
2) – Shaft must rototate within the bush which itself should be an interference fit in the housing.
3) – Off the wall questions serve to present my brain with stimulation, a necessity due to my personal on-going lock-down, now 18 months and counting! Unfortunately, everybody will soon be in a similar situation so perhaps I should start a new forum thread on coping with isolation for the virgins. Hey-ho.
Cheers,
B….