The API-579 methodoligies in CodeCalc do not agree with API-579-2 the example problem manual or API-579. For example when performing a level 1 general metal loss it is computing the incorrect remaining thickness ratio. It appears that it is still using the 2000 edition of API-579. API-579 2007 defines Rt as (tmm-FCA)/(tc), whereas CodeCalc is calculating this as (tmm-FCA)/(tmin). This is clearly contradictary to the definition of Rt in API-579 2007. Are there plans to update this software to the lastest edition of 579?