KK
It may be worth cutting down but there's no telling what you'll get till it's done. Some times sounds great, other times, not so hot.
Here's the DIY how to..
Get a piece of "no stretch" string.
Put a bolt the same size as the hole UP through. Make a loop in the string, over the bolt and spin on the nut. DO NOT make this bar tite. just tite enuf to hold it there but allow the string to spin.
This string is your gauge.
Get a felt tip pen like a Sharpie and loop the loose end of the string around the tip.
Measure out to the crack.
Now carefully draw your circle on the cymbal(this is best done on the top side) without letting the string slip.
You now have a perfect circle.
Carefully cut along the line with a jig saw with a NEW x fine hack saw blade.
Take your time. Be careful the cymbal doesn't start to vibrate. hold it firm.
When your finished your cut, dress the edges with a file and emery cloth. DO NOT use a grinding wheel.
Try out you "new" cymbal.
neat idea: I cut down an old Sabian B8 Pro like this once. Sounded like crap but used it for practices. The one day I hit it and it popped inside out.
WOW. It instantly turned into a fantastic sounding ice bell/fx cymbal. really hot, trashy with nice attack and quick decay. Not at all like the sad thing it was after the cut so.....if you do this and don't like the sound. try popping it inside out. You may be pleasantly surprised by the result.
good luck.