And for a reasonable price? I'm finally getting fed up with the weird clutch engagement on my 540i/6 and I'd like to get this done. Unfortunately, I'm still pretty clueless about non-dealership BMW mechanics around here, so I was hoping for some help.

Anyone have any recommendations?

I would think George at Imported Cars of Stamford would be able to do this. You can contact him thru Bimmerforums (his s/n is IMPORTEDCARS) or you can go to his website www.icsperformance.com . He hangs out in the Forced Induction section of bimmerforums

While i have never been to George's, i have always heard good things about him. Seems to be good to all the BMW kids.