Reply to "Oil level and dipstick reading"

Now that you can see the dipstick/tube dimensional diagram, here is why I am confused/perplexed.
I definitely have a PIM pan that looks just like the pictures on their website.
I have calculated volumes it can hold based on measuring the PIM pan.
Based on the dipstick/tube diagram, I marked my dipstick (Sharpie) for F and A. The oil level in the engine happened to be at F.
I drained the oil and got a little more than 5qt. Seemed strange since 5qt in a PIM pan should be lower than in a stock pan which I presume would have less volume per height.
Called PIM. They said that this pan will hold 10qt below windage plate. They recommend filling to 7qt (add at 6qt) for street use. Fill to 10qt for racing. My calcs agree that the pan should hold 10qt below the windage plate.
I slowly filled the pan with oil. Dipstick registered as follows:
1qt - nothing
2qt - drop on tip
3qt - 3/4" up from tip
4qt - 1 1/8" up from tip
5qt - 1 1/2" up from tip (this was also basically my sharpie F mark from before draining)
6qt - 2" up from tip
7qt - 2 1'4" up from tip
8qt - 2 3/4" up from tip (didn't fill higher)

It doesn't make sense that the PIM pan oil level would matching the dipstick diagram dimension marks for a stock pan. I measure about 25" tube length from the block to the end of the tube and my dipstick is the 38" shown length. I measured from the block surface down to the bottom of the pan on a line matching the tube entry angle. I got 15". 25" + 15" = 40". I pushed a stiff wire down the tube and measured about 40 1/2" when it stopped.
This is a lot to digest but a mystery for me.
Norm