I've asked (via a bug ticket) for LW to provide or alter the ability adjustment to be able to go over the cap of 20, but I'm not sure if that'll fly since the SRD only goes up to 20. It might be a good idea to add this adjustment to the community files since there are more common items that can take you over the cap of 20 (potion of hill giant strength for example) that don't have code behind them either.
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