From the indicated replies,it is understood that both the queries(Seam=No and + Mill tolerance) are related to the mention of TD/12 code somewhere in the model. I checked the model subsequently for the mention of TD/12. The two areas (ie.. under the allowable stress tag of input spreadsheet and the 'Default Code' of SIF's and STRESSES tag under Configure/Setup) where it can be mentioned were checked and found to be showing as 31.3. Is there another place in the model where there could be a mention of TD/12. Thanks.