Yoshi's Island 4-5 Red Coins

World 4 is the fourth world of the game Super Mario World 2: Yoshi's Island and Yoshi's Island: Super Mario Advance 3. It consists of ten levels, and it has six regular levels, a Fort, a Castle, an Extra Level, and the Match Cards Bonus Game. Mar 30, 2014  Find all the Flower tokens and Red Coin locations in World 4 of Yoshi's New Island with our video guide! 4-1: Hop 'n' Pop Till You Drop 0:04 4-2: Underground Pokey Patrol 4:22 4-3: Spin-Lift Drift.

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I have played through this game so many times, and yet...I'm always missing one red coin in 1-7, preventing me from earning 100 points all across the board. I have scavenged every other level and managed a perfect 100, but that 1-7 just gets me every time.
Does anyone else fondly remember this game? Did you have the same trouble in Touch Fuzzy, Get Dizzy?
Incidentally, while I played this game as a child, my original copy was lost in a house fire. When I finally replaced it, the price was FORTY DOLLARS. It is, to date, the most I have paid for a Nintendo game and it was totally worth it!