I would try the 105 jets.
There are a lot of variables here unknown. But I will say this.
As an engine wares it requires more fuel to keep it lit.
I would guess the shims as you state give it too much fuel , therefor I think the 105's
might do the trick.
I am not suggesting that your motor is junk ( to be clear) , but normal ware will require
an engine to need more fuel to try and run as it was when new.
You know, windows didn't get that bad over night! It took fifteen years of careful development!