Brake cleaner is cheap, comes in a spray can, easy to find. I use it to
degrease motors and other oil/dirt things, and Brakes. And MGs.
But.. its harsh on your skin, paint, and on plastics. Some brands leave a
white residue that needs to be washed off with something else afterwards.
If I had a tty33 out of the case I think I would start with brake cleaner,
then electric cleaner, blow it dry and a few hours in the sun and then a
fog of wd-40, and then
oil the parts that need oil.
But hey, thats me. I work on airplanes, MGA/MGB and GMC trucks too. And my
Sigma 9 (sigma9.info).