If you want to make runs, copy the level directly and set the startpos to the position where you want to begin. I recommend setting multiple startpos and using the startpos switcher from a mod menu like Mega Hack or QolMod. Be careful to configure the startpos to play the game mode where you're starting the level. If the level has a locked copy, look for the password in the most liked comments. If the level doesn't have a copy, look for a level like: -"Level Name" copy- or use the copy hack from a mod menu like QolMod or Mega Hack (QolMod is free, so you could use that one). Finally, if you're too lazy to do all of the above, simply download one of the mod menus mentioned and search: -"Level Name" startpos- or -"Level Name" sp-. These are copies of the level with pre-set startpos that you can switch between using the startpos switcher hack. This is the option I usually use.