oil circulating but heads running dry

[DSSMER1]

I have recently swapped my motor on my 97 eclipse its pretty much stock all I have done is eliminate the balance shaft and added a 16g the block is from a 98 gsx and the head is from a 96 tsi the car starts but no oil is reaching the head so I was wondering if any of these parts could cause the head to be running dry. Any help is appreciated thanks.

 

[DSSMER1]

Thanks this is really helpful but can you tell me if there is any problem if there is no rear seal on the front balance shaft even though it has no oil holes in it???