Regular ignition wrenches will not help you with a 1953 and later 235/261 distributor's points/condenser/external-lead nut. A special slotted screwdriver is needed (I saw security screwdriver bits at Harbor Freight that would work real well).

distributor point nut tool



Tim
1954Advance-Design.com
1954 3106 Carryall Suburban
1954 3104 5-window pickup w/Hydra-Matic
The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.