Is this below grade (i.e., buried) or above ground? It makes a difference since the all rubber connectors are NOT allowed above ground. Above ground, you must use the reinforced connectors - those have a stop molded in the rubber, so your pipe needs to account for that. What may be more important when cutting the pipe is to ensure you clean off any sharp edges at the cut and don't have anything sticking up and rough to catch on things. A very small bevel and you shouldn't have to worry about trapping things if your gap is small. If below ground, it is critical to backfill properly so the ends are not going to sink out of alignment - that can create problems (and is why the banded couplers are required above ground - there's nothing else to keep the ends from sagging or the pipe bending there).