You should definitely customize the treasure awarded in the adventure to give your PCs much of what they want (and need). If the fighter in the party is proficient with the two-bladed sword, don’t leave a +3 falchion in a dragon’s hoard. Instead, make that item a +2/+2 two-bladed sword. If the arcane spellcaster in the party is a sorcerer, let him find a cloak of Charisma instead of a headband of intellect.