I'm a little confused by the modification options presented on lightsaber crystals. The most hardpoints available to a hilt in the CRB is 5. Two of those are immediately unavailable if the lightsaber is to work, using a base Ilum crystal. Why, then, can the Ilum crystal take "Damage +1" four times? Is there a 6HP+ hilt I haven't seen?
Most other crystals have options totaling more than 3HP, but that doesn't explicitly implicate an error. The krayt dragon pearl and mephite crystal both have options at 3x, but that's still feasible. However, with only 3HP to work with (more or less), there doesn't seem to be a lot of room (difficulty aside) to customize crystals, especially in a modified hilt. This seems like a part of the ruleset ready for a FAQ/Errata.