Unfortunately, I have to agree, . .
. . . with the consensus here, . . there is no real cheap fix to your problem , . it just sounds like you got a Zildjian with lost of overtone wash, . . I hate to be one of those guys that always post comments like, . "go get your self another cymbal dude, . ." when all your looking for is a solution to your problem. But, unfortunately it sound like ya need a new cymbal, . . either a ping ride (which in my opinion STILL has too may overtones for my taste, . or a Zildjian Dry Ride, . . which really works for me-- Its a matter of taste ,, , Unfortunately there not cheap-- But, since you already have a Zildjian, . I would recommend you sell it on ebay,..and look for a ping ride (which tend to be cheaper than a dry) or a Dry Ride. .
Good luck man, . .tell us how you make out. . .
PS You might want to try micing your overhead ride cymbal differently, . .and experimenting with different positions, . .to try and make it at least sound a little better. . . But, the rule is if it sound like Ca-ca live, . most likely its gonna sound like ca-ca on the tracks. . .