Ballasts are untouched. Michael got CLOSE, but not right. OV-15 came without a refractor and the 115 on the stand is usually FCO. Also look at the older 115 on the ground. Look closely at the reflector. And Look at the OVZ closely too.
Michael got the first parts. Now you guys just need to look at the OVZ closely and look at the 115 on the floor closely. Look at the 115's reflector. See anything?
Hint: Think about the 115's only.