Get rid of the Heavyweight classes altogether.

HW End
HWSS
HWSB

grids are 99.99% 600's anyway....

then, in theory we could run

LW End
MW End
Open End

as separate classes and still be done same time on Saturday which would please everyone (but most especially Corner Workers).

Of course we'd have to look at revenue and see if that would be shooting ourselves in the foot - but seems weird to have classes that nobody actually makes/owns bikes for any more...