Help with the screws on a P1 / P2

I have recently decided to boot up my old p1 and p2's but have noticed that the screws on all of them feel unusually tight and stubborn. But the big problem is when I attempt to unscrew they won't budge and I fear that it will damage the phillip head groove on the top, which will only make it harder. Help please?

Try turning them a little to the right, and then unscrew them. This might loosen them a bit.

Try putting a drop of oil on top?

https://tama-zone.com/index.php?showtopic=22127

I had the same issue with the P1 I am currently running. I had to apply extra pressure down with my small screw driver and maintain that pressure as I turned to the left. Even as I went the first turn or two it was very stiff and little squeaky.. I think because it had never been used, but can't be sure. Keeping a firm amount of pressure directly straight down and in line with the screw head and driver is what seemed to help me, but if your driver keeps slipping of the screw when you attempt to turn then I definitely wouldn't suggest compromising the integrity of the screw, but I noticed that when this has happened to me I just needed a firmer grip and more pressure.

Thanks guys! The slight turn to the right made a click sound making the rest a bit easier!