Hi guys for weeks i have had a real problem with my track not laying flat looking more like the 7 HILLS OF ROME i now found out my base board was some 3mm to 7mm out not wanting to start over i tried paper mache but was unhappy with the end results that i have now tride and tested this cover the underside of track with vasoline let it dey of sprt then fix track in with slicone to get the right level leave over night and put longer pins to secure the vasoline helps as a barrie to stop the silicone from damaging track any cock up just lift and peel off silicone now have track 97 percent level overall locos running real good just took a few day for the relaying and leveling.mike