I'd say either make instrument parts far more plentiful or retrain Hendrux so he only facilitates your instrument creation.
The creation of the instrument or the acquiring of one should be pretty much a non-issue. If I want to specialize in the writing of songs for any particular instrument, there should be a way for me to get one, without undue frustration. I've always found the instrument-making part of the game a flawed and pointless concept. It's about the music, not, as someone else put it, "Item Lord." Give the bards the instrument they want and then consider the music and the effort.
Original music in Clan Lord is a very, very amazing and wonderful thing. I remember when it was first introduced I was ecstatic. I wrote a ton of songs for all sorts of instruments that CLTH allowed, only to find out that instrument parts were few and Hendrux prohibitive. I played and wrote for the reed flute for a very long time, much to my great dismay.
I don't want to RP a pissed-off bard who can't get the instrument I'd like to play. I'd like to RP the bard who loves to play the instrument of his dreams, much to the delight of others around him. I have enough frustration in RL dealing with creative obstacles that I shouldn't have to put up with them in game. To inhibit a bard's expression by creating needless barricades only dampens the spirit of clanners that much more.
I'm happy to see efforts being made to get to the heart of what is important to being a Bard.