Fixing a crack in transmission case?

Hello all, I have a 1994 automatic honda civic dx coupe a while back i got stuck up on a rock and cracked the transmission case directly on the bottom it's kind of more of a hole it's about the size of a dime. I had put some jb weld on it and it held for about 9 months but then decided to start leaking. I was wondering if anyone has had this problem before some tricks they did? ( I was told you cannot weld my transmission bein as it is aluminum.(the transmission is stock) I was pricing them found one for a 380 but wanted to give something another shot before i pay that and than pay to have it installed. All ANSWERS GREATLY APPRECIATED (;

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