To add an alternative: I recently bought an Antony Dannecker
"Meisterklasse/Cross MS Combination Ultra Custom" harp in G Paddy
Richter. It's basically Meisterklasse covers and reeds on a Cross
Harp comb and sells for a bargain £35. I find it a joy to play and
often choose it in preference to the Promaster I got from Brendan --
largely because I don't really take advantage of the valves (and, like
you, I often get them gummed up). I will definitely be ordering
another of these in D very soon.
Antony is at: http://www.southx.biz/dannecker/home.htm
Cheers,
Rob