You understand the mechanics of turning up the pressure. BUT, you need to know how high before you cause problems. You need a pressure gauge ... readily available at Home Depot and not expensive.
Here is a video that shows you how to use one.
Not sure if any one can tell the difference betwenn 55psi and 60psi ... but its OK. I would not go higher due to possible damage to sprinkler, faucets and washers.
OH ... welcome to this crazy site. A lot of great people here. Remember to post pics, explain your problem, and (as wit Facebook) provide "Likes" to people who do their best to help you.