Ok I have done all of the switch testing in diagnostics and everything comes up as it should I use 1 ball to test all switches not my fingers! During gameplay the 1st ball that makes it in to the upper trough does not register as a locked ball. The 2nd ball entering the upper trough registers as the first locked ball and each ball entering after registers fine for multiball. Also on the last ball if I get an outlane ball last chance and I have 2 balls in the upper trough, they are both released as last chance. Does anyone have a complete detailed picture/s of the bottom of both upper and lower troughs and how each is wired so I can make sure it wasn't goofed up by the previous ownership! Thanks in advance.

Anyone here?

Oh how fun. Problematic indeed!