Got the 4x!

Played on Kega 3.64

MSM Mod manual visual verification:

Under Ground 1: 16s | Under Ground 2: 22s/38s | Under Ground 3: 55s/1m33s

Sky High 1: 20s/1m53s | Sky High 2: 13s/2m06s | Sky High 3: 27s/2m33s

Aqua Lake 1: 16s/2m49s | Aqua Lake 2: 1m22s/4m11s | Aqua Lake 3: 37s/4m48s

Green Hills 1: 27s/5m15s | Green Hills 2: 26s/5m41s | Green Hills 3: 39s/6m20s

Gimmick Mt. 1: 28s/6m48s | Gimmick Mt. 2: 38s/7m26s | Gimmick Mt. 3: 23s/7m49s

Scrambled Egg 1: 57s/8m46s | Scrambled Egg 2: 32s/9m18s | Scrambled Egg 3: 47s/10m05s

Crystal Egg 1: 17s/10m22s | Crystal Egg 2: 43s/11m05s | Crystal Egg 3: 44s/11m49s