Thanks, I don't have that beta version unfortunately so cant run your example, although I've tried both with and without pixel rounding and the effect is exactly the same. I get gaps any way I try. I thought this was going to take 5 minutes, but I've been stuck on it all day:(
No stretching edges and everything is snapped to the c3 grid. It uses whole numbers and dt to move each hill like this..
set position x to Self.X-5