incorrect xp for Summon Pouch

What I did: Crafting Granite Crab Pouches

What I expected to happen: to get 108(21.6) xp per pouch made

What actually happened: gained 158(31.6) xp per pouch made

IDs of related NPCs/items: 12009

2009-era source (if relevant): https://runescape.wiki/w/Granite_crab?oldid=887714

Screenshots or video:

LIVE SERVER username affected by this issue:

Bug reports are not accepted by SP users. SP is often out of date and results in invalid bug reports.

If the bug is exploitable make sure you tick the confidential checkbox below