We're about to enter the carpentry phase (timber box beams, roofing etc) of a self-build strawbale house and I plan to buy a used Paslode first fix nail gun, probably an Impulse IM350/90CT (reasonably plentiful older model and affordable at around £200ish). I need to use ring shank nails in most external situations, anyone know if this gun has any limitations in that respect? I've seen hints that it can't cope with 90mm ring shanks. Any idea of the min and max lengths of nails it can use?