The 50/50 piece, of all things had to be shortened from 100M to 50M even though it was tangent. On 3 or 4 other ""Fails" it has been a curved piece of 20 degrees. Putting a 5 degree piece on each side & having a 10 degree piece over the boundary fixed it but these were curves of 6 degrees or sharper, Mtracks curves. In one stupid incidencee, I had a 500M road piece over a boundary, definite no-no that I somehow let slip in. I should point out that so far all errors but one would be found in the original KD sub. route now in the library. Not an issue though unless you attempt a rebuild.
Jerry