Originally Posted by
nativetexan
yes, they needed to be trimmed. be sure to use a ruler that has a 45 degree line going from corner to corner. lay that on the seam line, trim two sides if needed. turn block and lay ruler on line again and trim last two sides. should fit perfectly after that.
This is exactly how I trim HST's as well. And those 7/8" cuts are crazy. Use the full inch cutting and trim and everything should match up perfectly.