The attached map revision fixes a critical flaw in Jonathan Wu's "Nitemare" level that made it impossible to complete the level.

Previously, the "sector copy" replacing the warp floor in the Sumo section of the map was incorrectly set up in both source and destination sectors with match Tag3 values of "33" (likely invalid). Tag3 in both is now reset to 15, the next increment in that series of copied sectors.  

Additionally, the source sector ST1 for the warp floor was set at the same Z-height as the original, which is apparently NOT replaced or deleted by the copy operation, since it's not a VISIBLE sprite. As a result, the overlaid warp floor sector STILL sent the player to the original sending site, rather than to the intended new destination. Moving the Copy source sector's Warp Floor ST1 sprite up one notch remedied this entirely, since the higher ST1 is encountered first when going down.

I've also taken the liberty of adding a single decorative sprite to the sending transporter location (off the gold key room) to provide at least a hint to the player that pushing (Spacebar) is needed at that spot to progress further in the level.

The map is not mine, and I take no credit for it other than these remedies.

JMF (Nemo)  