Maybe one of you guys can help me. I just recently got given an old HiFly 320 Pro for the kids to play / learn on. It's in great nick and should float them well. Thankfully it came with the base plate and mast extension, but I only have RDM mast and the old alloy extension is for standard size. Is there any adaptors or the like so I can use my mast? Or is it a case of simply track down an old standard diameter mast?

Cheers for any info.