I use 3 ncode 90's for tennis. All of them are 4 3/8. I have one extra (brand new) ncode 90 in 4 1/2. I don't want to use it and I no one is buying it off e b a y. I tried selling it a few times and no one is interested. So what I'm asking is... is 4 1/2 a big difference from 4 3/8 in real play? I compared them together and it looks a lot bigger. Would it be best for me to take the leather grip off, put lead tape on the handle and use an overgrip? Would that make the grip size closer to my 4 3/8 size?