When this has come up on here before answer seems to have been "take it back to dealer get it replaced under warranty", tho that supposes warranty hasn't expired. (?) Don't think I've seen suggestions about how to actually fix it. I would imagine leaving the high beam on would dry it out but can't really do that on the road can you?
My new X10 doesn't do it (yet!) altho the blue one did. Can't remember tho how much it affected the high beam.
I presume you mean additional lights to help the high beam ~ firstly do the headlight switch mod which leaves the dipped beams on when switched to high beam, then what I did in addition was get a Philips X-treme H1 for the high beam lamp, is almost like doubling the light output, flippin' stonking good lights now, couple of months ago I did a 180 miles trip home at night all on country roads, lit 'em up like a bluddy searchlight.