We are redesigning the walkways and grabs on one of our newest cars - the NWF13 53' d/stack car www.nscalekits.com - following earlier comments. It has been suggested that we design the walkways to take the drop style grabs. However, I do not have any of these here, and in order to make the etch suitable for them I need some dimensions. Would you suggest the 15" or the 18" for the d/stack wellcars? What dimensions should there be for the holes in the etch to receive the grabs? We will include an etch for the grabs in the fret for those with no access to the Atlas/BLMA drop grabs. Thank you Peter Peter Harris N Scale Kits www.nscalekits.com