I haven't read the entire thread, but I just wanna say...if you go to court and say "I wasn't doing 36 miles per hour; I was doing 30 miles per hour!" is like saying "I didn't stab that woman 36 times; I only stabbed her 30 times!"
Yer still guilty.
The judge may drop a few MPH off the ticket for your honesty, but around here, that wouldn't amount to much.. The bulk of a ticket in Kentucky is the court cost; the exact miles per hour over the limit only account for a few extra dollars. I've gotten tickets in several different counties in Kentucky and it's always the same...so long as you're not doing more than 15 over (or even more, on a limited-access highway), it's basically not a big deal. I suspect it's much the same in Indiana. If that's the case, I'd pay the fine, go to traffic school to keep your insurance from going up, and watch more carefully for the next kojak with a kodak.
There's no way in heck I'd waste a day in court fighting over 6mph if I were actually speeding and if the extra 6mph didn't amount to an elevation of the charges against me, though.. Just not worth it.
And, yeah, I've been squarely in your shoes before. I was written up for doing 83 in a 65 on I-64 in Rowan County, KY by a DOT in like 2000 or 2001.. He admitted that he hadn't clocked me, but claimed that another officer did and that he was working off the other guy's radar. I knew it to be an outright lie. I also knew 83 was total BS because I was keeping it under 80 specifically so I wouldn't be more than 15 over in case I did get a ticket. I told him as much and he blurts out "What's the speed limit?" I said "It's 65, but..." and he cut me off by yelling
"Good enough!" and smugly walked back toward his car.
...and LEO's wonder why people...oh, nevermind...
Anyway, as it turned out, I was still eligible for traffic school even though the ticket was written for more than 15mph.. Reason being, I was on a limited access highway. The fine wouldn't have been very much different at all to go from 83 (or whatever it was) down to the 78 I was actually doing, so I paid it, went to traffic school, and that was that.
Was it fair? Nope. Was it an abuse of authority? Absolutely.
That's life.