Hmm, no contact info posted for Casey.
Wont challenge Paul's input, wood removal and replacement for strength "might" result in a heavier plane. I've seen Paul's Baby Clowns fly and they are super.
Adding weight to a 1/2 A P'finder is not recommended.
Mine have weighed ~11 oz. each. Hundreds of flights on 48' lines. Have some ideas, next one will be lighter.
Roger V.