How to open up rocker arm oil passages.

Whoop! I have a spool of that from Spencer Aircraft, left over from building a wood and fabric experimental aircraft from a set of blueprints. AKA; How to spend the most money possible building an airplane. Mine is .032" though. Maybe good enough to open it up enough to spray carb cleaner through?
.032 will work, but you will have to make your drill wire shorter, as it will want to bend easier. Use a good air gun with a rubber tip and at least 90 psi to blow out the oil ports.
Norm
BTW, what kind of homebuilt was it. Did you finish it? Fly it?