After thinking over this problem again I would suggest the following solution:
Change the calculation algorithm of the condline values to the algorithm of the quads values. This will not cause in hairline gaps for parts and changing the condlines will not result in any problems for the existing parts.
/Max
Change the calculation algorithm of the condline values to the algorithm of the quads values. This will not cause in hairline gaps for parts and changing the condlines will not result in any problems for the existing parts.
/Max