I don't know how far you are from Delta, but Mel is an expert if anyone is on timing these IDI's. How many has he done..........hundred or so I'd guess. I can't volunteer him, but you might try and send him a private message. His handle is "Agnem" and he is great guy.
Option number two is to come to the IDI Rally and get it timed during Mel's annual timing clinic. He'll time 5-10 trucks that day.
Heath