Nest SUMPRODUCT with SUBTOTAL with 3 criteria

In the attached workbook I'm trying to get the average, filtered, that match three criteria. I removed the opening "=" to preserve what I have so far.

My best guess at this is "SUMPRODUCT(SUBTOTAL(101,OFFSET(M$1:M$2000,ROW(M$1:M$2000)-ROW(M$1),0,1,1)),--(H$1:H$2000=$A2),(M$2:M$2000,"<20"),(M$2:M$2000,">0"))".
Any help would be greatly appreciated!
Sick

Your sample is impossible to check manually, so I deleted thousands of rows. is this it??

Total
=SUMPRODUCT(($H$2:$H$20=A2)*($M$2:$M$20<20)*($M$2:$M$20>0)+0,SUBTOTAL(109,OFFSET($M$2:$M$20,ROW($M$2:$M$20)-MIN(ROW($M$2:$M$20)),0,1,1)))

Count
=SUMPRODUCT(($H$2:$H$20=A2)*($M$2:$M$20<20)*($M$2:$M$20>0)+0,SUBTOTAL(103,OFFSET($M$2:$M$20,ROW($M$2:$M$20)-MIN(ROW($M$2:$M$20)),0,1,1)))

Average is then easily calculated...

Post a cut down sample containing the error. If you have text in there, it can muck it all up...

I'm away for the night, but will be back in about 18 hours (travelling... not 18 hours sleepy!!).