We normally use an APC 15 x 8 propeller on the test stand. This gets the engine running in the 9,000's, which is where it should go.

If your intake pipe is bent or dented, you can order a new one from any O.S. retailer. Here is the stock number and list price:

OSMG6483 45569420 INT MANF ASSY FS120E US$29.99