[RTTY] Cushcraft balun power handling?

[Bill Turner]

Has anyone had any high power problems with the Cushcraft balun
supplied with the X7 triband yagi? They rate it at full legal power,
but it seems a bit small for legal limit RTTY contesting. I'm almost
ready to put the antenna up but I'm wondering if I should just replace
it now while the antenna is still on the ground. 

Some years ago I blew a Hy-Gain balun on a TH5-MarkII, but after
installing Hy-Gain's higher power version, all was well. I'm thinking
I should do the same here.

Any suggestions on which balun would be a good choice to replace the
Cushcraft? 

73, Bill W6WRT