Bill,

I am in the process of installing a BT 43ei on my airplane and wish to use an aluminum spinner. I have looked at the supplied adapter bolt and am confused as to how to install the propeller with this bolt. The bolt has an area that is 10mm in diminsion. Do I drill out the prop, backplate of the aluminum spinner and the front washer to match this area? Is there any drawings or pictures of this adapter bolt that I can look at?

Thanks,