Like Cari said, make sure you get the correct lever. The newer flat end one is rather easy to find, the older barrel end one is a bit less common. I did not know the difference - and now have an extra flat end one.
I did finally locate a newer (1929) 99 that takes the flat end lever, but it came with a lever. I've got an older 128 that takes the barrel end lever, and I did locate one of those too. And since I have the table taht fit into, I have the straight version of it also.
For reference, you should be able to get one around $30 - $50 mark. Some sellers ask a lot more, and sometimes you get lucky and find a "buy it now" cheap before anyone else does.
The barrel end one in this picture is the straight bar - so ignore that part and pay attention to the ends. They fit into the controller on the machine.