Had a similar problem with my recent RC resurrection, sat for 8 years, no fuel in the tank or lines. I told the shop of the bike's condition and how it was stored. During breakdown they pulled the fuel regulator and pump. Forced a cleaner and fresh fuel through the lines, pump, and reg. Mech said he didn't see anything that concerned him but there was still fuel in the lines. Guess I didn't get it all out. Still after running the bike the reg needed some more attention, nothing major but it has been running strong since.
Could be miscommunication as jondog9 stated, or could be a regulator needing attention. Either way, stacy calm, talk face to face with mech and get it squared away. More than likely something minor.