I would fix the defective parts right. Then you don't have to worry about it and enjoy your rides and have fun. Nothing ruins a ride with friends than a broken quad and can't fix it until you get home.
any pics ? i was told that u couldt get 1/2 a case. if you have the $ get a new case [$550 gaskets & all] the staelerships around me want $$1550-3550$$ parts & labor! back n 89, my bro broke an ear off the case of my dads warrior the same way . were in the mountians so my dad jb it & we road it later that night [small hole] with in 20 mi of that , same bro last summer put a rock threw stock skids & 2 1/2 in gash in bottom of case [ brand new bike] my dad & bro said 2 jb it, that was Nov '06. rideing it ever since, of corse got alum skids & dont let him touch it any more j/k.