Vid has a post from a few years ago tells you how to get the game going fast. I just sold mine. Since you only have 1 pop make sure that sucker is clean and mean. put a new sleave in the coil and the rubbers up there. Also all the inserts are known for popping out of the PF, so you may need a heat gun, a soft hammer and a piece of wood to level inserts. But new rubbers, rebuilt Pop, Rebuilt flippers and make sure you have all new coil sleeves. and wax!!!!

Page 26 in your manual tells you what adjustments are automatically made when "Install Extra Hard" is chosen. There are fifteen settings altered from the factory default. If you have the manual available from IPDB it's page 26 of the .pdf.

Wax will make your game faster. If your goal is to make the game harder just increasing the playfield steepness probably won't do it. You get slightly greater ball speed coming down, but less speed going up and less side-to-side action, meaning probably fewer outlane drains.

Flipper thread from vid1900 is at https://pinside.com/pinball/forum/topic/vids-guide-to-upgradingrebuilding-flippers New coil sleeves often help but there are several good options depending on your skill level and how much work you want to do.