In order to save space, I've been using my FC twin to satisfy my NES/SNES urges. Just recently bought Yoshi's Island at a pawn shop for 7 bucks (score!). Ever since I've played it, I've lost a file at 4-7 and another file at 5-8 due to the game FREEZING at levels. I'd also like to note that the game appeared to be beaten if my memory serves me correct from the previous save/owner.

Has anyone else had similar difficulties with their FC Twin and Yoshi's Island?

Having to go through the game just to get past 4-7 and then have it freeze AGAIN and lose my file made me put in Actraiser which isn't a bad compromise.

EDIT: Sorry if this post appears silly. I'm extremely faded.