Is this the set you used? My old harbor freight set has worked fine on about 8 235/261 engines. It has also worked well on removing many steering wheels.

Maybe they have become poorer in quality - mine is about 14 years old?

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.