I'm getting stuck into my KE15 at the moment, dealing with the rusted area inside the scuttle panel at the heater air intake. Very much a beginner welder and learning as I go on an area that won't be visible. I've quickly learned with butt welding not to have the two pieces of metal flush, as the penetrance isn't there. Soon as you grind it off, the joint is week and you are pretty much back where you started. Back out to have another go.