Craig,

I support the engine with a 2.4 across the engine bay, too.  But, I took
a chisel and made a small well (1"x1" x 1/2" deep?) near one end of the
2x4.  I support that end of the 2x4 with a small bottle jack (obviously
with the end of the jack in the well), which makes raising and lowering
the engine real easy.

Karl