My new project

Update. Today I installed my new mechanical gauges and that took longer than I thought it would but came out ok.
Now I can tell when I have oil pressure so that's good , sits around 50-55psi when idling.
Next I adjusted all my valve lashes and it was quite interesting. I followed what many said to do on here and made sure to do a short drive and get up to operating temp then when I checked them I found most had zero gap. Some took at least one whole revolution of backing off before I could get a .004 feeler guage in between. I set all the intake valves to .010 while the engine was hot. Then put the valve cover back on and ran it for awhile to get it back up to temp.
Then took the valve cover off and did all the exhaust valves to .020.
When I put it all back together and ran it it had a very slight hard to hear tapping sound that wasnt there before. I believe this is a good thing because now it sounds like the 273 I had before when it ran good.
Now the good news. I did another compression check today after everything and get much better results doing the exact identical process as last time.
Heres my new numbers
1= 145psi
2= 150
3= 130
4= 110
5= 157
6= 150
Much better than last time but still down on cylinder 4.
It runs and idles alot smoother now too, I'm so happy. Worth the 8 hours I spent today (I know that's a long time I'm a noob). Anyways I think I'm going to replace the plastic oil pressure line with a copper one next oil change, for looks as much as reliability.