Thank you very much again for detailed expression. As you stated, I will start by shortening throttle arm linkage.If I will be able to achieve shift from 3-4 at 150km I will not go on with governor pressure. Othervise Work is little bit more complicated) I think some info exist about governor pressures on service book. Tomorrow I will try to adjust and write results. Also I will recheck ignition timing at 3500 rpm without vacuum and set 35.

Thank you very much again