Good news, Ladder106!
Although SR41-42-43 engines look similar there are a lot of small differences. Thanks for recording this info here so it is available for everybody.
I just disassembled the carbs in order to clean and rejet them.
The pilot jets I took out were 40, main jets 117.5 and needle in the 3rd notch.
Everything like in Suzuki specs of SR42.
I will install 130mains and 45 pilots now because I've changed the whole exhaust from header to muffler and probably will modify the intake, too.