Well, I was just spending some time looking at some old posts and I found one where someone was having the same problem on their 190e:
Help ..190E 2.3 question
Could it be possible that it would be the ignition control unit? Judging by the symptoms that graybenz190E had and how similar they are, could it be the likely problem? Is there a way to test the controller, because almost $300 is alot of money for a college kid like me