Front right timing cover

[BJ]

Just took the timing cover off to see if any previous owner/s had fiddled with the ignition advance and noticed that there was evidence of oil over everything under the cover with just a couple drops in the bottom of the cover. I would have thought this section would be dry! Is this correct?
Also is the oil pressure sensor in this cover?
If yes should I attempt to tighten it or just replace it?
All advices welcome. TIA

[mlivkovich]

There should be oil. Red arrows show holes in crankcase, so behind them is crankshaft and there is where oil comes from. In this pic I removed oil pressure switch and ignition advancer and plate after crash I had last year to replace broken parts and repair cover bolt thread

[BJ]

Thanks Mr M.