[UK-CONTEST] Dual 6M/4M beams?

[Alex GM3ZBE]

Hi,
Does anyone use a dual 4M and 6M beam if so how does it perform?.......I 
think I remember GW3YDX advertising one are there any others?
I have a Moonraker 6M 3ele  but I could never get the gamma match right, 
I get the impression the beam is not working well. I would also like to 
get back on 4M but don't really want to put yet another beam up for 4M.
Alex

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Alex, GM3ZBE ~~~~ Kingdom of Fife ~~~ IO86lf ~~~
Member of:
De Montfort University ARS,
Kingdom Amateur Radio Society (KARS)
GMDX Group, CDXC, Aberdeen ARS
Previous callsigns GM8BYG, G3ZBE
Holder of GM4BRN club call http://www.kars.org.uk/
 
Remember..............It's only a hobby!
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