Choke opening - 3 mins for main open
5 mins completely open (with no through draft)

plug lead resistance
20k scale
1 7.09 - long lead
2 8.35 - longest lead
3 7.93 - long lead
4 6.51
5 5.28
6 6.32
7 5.19 - short lead
8 5.19 - short lead