I have a side mounted O.S. 1.60 with a perry pump. My starting ritual is as follows.

1.Open carb fully.
2.Plug carb with my finger and flip prop until I feel fuel on my fingertip (about 5 flips).
3.Close carb completely, flip through compression 5 times.
4.Open carb about 15-20% and flip back-wards against compression.

It is rare that the engine does not start on the first back flip. A different setup might require different voodoo. This works great for me.

Scott.