$3 Cooling Shroud
Click on the photo and navigate right to see the items we purchased and all steps in order.
These channels around the inside are suitable to direct air around the Ignition shaft head.
We are planning to drill two small holes at the end edges and use a lock wire to pull the two sides together just a little bit to get the bottom side sitting fully on the body. Leave a little play as depending on glue material used, engine vibration may break the piece connecting the blast tube to the shroud.