Finding 4 1/2 in Thailand is like trying to find a needle in the ocean ... 4 3/8 should be possible. And, yes, FBT and Emporium should have Volkl rackets, but I'm not sure about the C10Pro 98 as this is an older model. I plan to visit FBT tomorrow for some leather grip, will find out for you.
PK REDONDO TALKS & INTERESTING LINKS REGARDING REDONDO:
Making a Super Redondo:
"Don't play what's there. Play what's not there." -- Miles Davis