I've never had luck with other peoples tiling, always let Adobe do it from full-sheet plans.
In Adobe go to Edit > Take a Snapshot. This allows you to print only the parts of the plan you need or crop the whole image right down to the parts to save paper. Choosing "no alignment marks" will save a few pages as well.
I've also found the the better your printer, the better your tiles will align.
Found a silly thing the paper guides weren't up against the paper allowing it to not go through straight