I recently traded a couple push mowers for a non running h14xl. Like most know it has the oh140 tecy. I tinkered with her some and got her to fire enough to check the hydro which seems to work properly. However the Tecumseh is knocking like no other. My question is what could I replace it with that doesn't require any cutting or fabrication? I just joined two minutes ago and apologize if this ?'s been asked before.