I have an older (1988) Toro GTS5 mower model #20622. i think it is a briggs engine but not sure. It will not run steady even at idle. It surges all the time, I thought it should idle without surging? It does smooth out some under load. When i over ride the governor it runs fine, so can I rule out a carb problem? IF so, how do you adjust the governor? Also, this mower has never seemed to have many rpms, doesn't throw the grass like it should. Thanks for any help.

New here, I have a Craftsman LT4000 with a 14HP Kohler engine, Model 917 255450 Serial 022593S 006499, I'm having issues with left and right side deck height. I know how to adjust the deck front and back, but I cannot find anything to adjust the actual side to side height. The left side, driver side, is roughly 1" lower then the right side, my yard is hilly and has lots of high and low spots so I'll often find the mower digging into the ground or cutting the grass extremely low with the left blade. I've looked the deck over and don't see anything wrong. Anyone have any ideas? Thanks for the help.