oil leak from the pump

Hello!
My 1988 b2200 has an oil leak cooming from the adjustment allen screw of the oil pump (see pictures). The oil pump is new... any advice?

Also, I just rebuilt the motor and the darn damper is wobbly.... arghhhh! I see the little space were the key of the crank sprocket goes is out of shape... should i replace the damper?

Thanx!

If the crankshaft key recess is OK, but the pulley itself is wallered out, yes - I'd replace the pulley, sure don't want to damage that crank, that's for sure.

As to the adjustment screw in the oil pump - and I'm asking here - can one remove that readily without some spring flying out and getting lost - then I'd remove it and wrap the screw with PTFE (teflon) tape and re-install.

I don't know what would happen if I unscrew that bolt... And I haven't found info on the web yet...

I will replace the damper-pulley also just to be safe, because the crankshaft key is fine.
Thanx cusser!

Leak doesn't look too bad - I'd wait until someone with knowledge posts about that - some here and on mazdatrucking.com have old pumps they could take apart, or would just know.