Hello I have to report here with a question. Also I have a cab of M25 completely revised. All rusted parts were separated from us by new sheets. All sheets were installed like original with an approx.12-15mm overlap and scored by hole welding or if possible. All grooves were painted before the welded with Owatrol and then immediately welded. I have still some places on the underbody which are not 100% dense, just like the e Konstrucktion it has allowed There are small cracks and Co. These places I would like to seal with a body seal mass that from below no water can penetrate into the grooves and dopplings. I actually want to make the sealing mass on the bare sheet metal that also affects only the underbody so not visible. But how do I go in the visible area before there there is the welding Visible crack where plates with dopplings have been placed. These still have to s I had roofed the grooves to be treated with owatrol again and then filled with fiber spatula then the crack of the dopplings. Is then the body still sprayed rust protection primer or how do you do that?? What do you have under the 2K topcoat, I have old sheets with sanded-on paint and partly new untreated sheets. What do I do with the only rusted spots in the visible area of the cab how do I treat this e. Mfg Liebscher