Hi Raymond
How did you seal the oil transfer block?
SRM weld in this block

This block must hold the full pump pressure somewhere around 60psi cold
If it leaks you will wreck the engine

If you need I was going to pull out an engine project to photo the block welded in place
I cannot see how oil level would get high enough to reach the tacho drive just turning the engine over
That said they are prone to leaking as standard

I eventually made up a new rev drive housing that contains two sealed ball bearings
John