I drilled up the holes and the rivnuts for my main landing gear spats. This was easy and fairly straightforward. The nose wheel however was a challenge. I found getting the holes where the rivnuts and the tow bar connects difficult to get aligned correctly. So I used the hole finders. However, I was not able to actually find the holes with the hole finders. So before putting the fairings on, I taped the whole finders in place and then slid the fairings through the hole finders.