These are all the Hard Clue Scrolls ingame. If I missed any please let me know so I can add them thanks. - Jake.
Falador cross roads
South East corner of Yanielle Bank.
On the peninsula West of the Crafting Guild.
North edge of Falador Walls
By varrock east mine, Must stand exactly on the leaf
Read clue south of Wizard Tower (Draynor)
South of Draynor Fishing Spot.
South of legends guild (North east of ardougne)
Level 53 wildy, South corner of arena. Dig with a spade.