First proper change after dyno breakin and its oil change. After a weekend racing + DE, with about 6hrs on the engine, sent sample to Blackstone for analysis. Lead (pb) was high enough to raise a flag. Engine builder confirmed this is ~ normal for a new engine and should settle.
Will continue to monitor and sample each change to establish trend.
Sent the block out to be re-honed. Its condition was good and main bearings look so good they’ll be reused. The pistons have been coated in order to fill the small increase in cylinder bore diameter resulting from the honing.
Had the sensor replaced while the box was out of the car. Before installing the transmission, checked the voltage output on the position sensor. Found this sensor provided reverse from expected. Low gears, higher V steps down as gear position increases.