I have been on the comeback trail for 5 months from 25 years off (occassionaly playing with my kids for about 10 minutes and I was done) Things had been coming along pretty well, but I just ran in to a snag for our last performance. Seems that I lost any clearness of tone at g to d in the staff. Got really airy and then nothing. The last 3 days have been similar. Any ideas?