my engine RPM just drops... Any ideas?
See what
key U assigned to magnetos. See first post/engine for ~% . Be sure to be on magnetos 1+2 (this is default).
Perhaps U are reducing magnetos to 2 and then 1 without noticing...
if U press "plus" magnetos, normally
nothing happens cause U are already at maximum 1+2.
if U press "minus" magnetos U see "magneto 2" on screen; but with this done, U are now down to 66% engine power and doomed.
... so U need to go
back up to 1+2 with a press of "plus" magnetos key again.
Good luck with that!