Not logging the hours, my thoughts are it takes as long as it takes.
No l havent built a aircraft before.
But l have restored a 52 Chev, 57 Chev, 40 Chev and fiddled with lots of Holdens.
Also have a couple of bits a paper on the wall saying l am a engineer.
If l change somthing l always check it with Gary.
Just have to get used to building lite.
regards Bruce