Beloved pinside community,

I've been having an issue with my fish tales which caused tilts during (and only during) the multiball.
It's been quite annoying, and I finally made some steps towards a solution, but still without being able to solve it.

To summarize, it seems there is an issue between column 1 and column 3 of the switches, but that is not matrix related (tried with a brand new CPU, exact same behaviour)

so, what is happening:
When switches 16 and 36 are both activated (which happens when you have drained a ball and put one in the caster's club to activate the jackpot) then all others switches I hit from column 3 are also activating their counterpart on column 1...

so 16 and 36 together are also activating 18
16 + 36 + 34 are activating 18 and 14, thus causing a tilt.
16 + 36 + 35 are activating 18 and 15
and so on

I am wondering if the switch 38 is not related, but it's the reel opto, and it behaves just fine in test.

I thought it was diode related, I changed the diodes of the below switches but no luck
new diodes: Sw 36, 15, 16, 17, 18, 34

Help?

Many thanks

Would someone have pics of their wiring on the following switches?
Catapult
Through 1 to 3
Spinner
Ball eject

many thanks all for the insights, it seems to be solved!
Catapult switch was wrongly wired by previous owner.
Thx to a pic from a friend I rewired mine and it seems all good!