I recently measured V Lyr and noticed what appears to be a missing star, 3UC 240-15811. The nearby comparison star I am using is AID 000-BCF-469 Label 137. I can get down to about 16th mag and should be able to see 3UC 240-15811 which is rated at 13.69. Other may wish to have a look.
Robin Riordan RROA
Links:
[1] http://www.aavso.org/forums/variable-stars/long-period-variables-lpvs