Certainly worth a try, btd- was the Australian headliner pictured a P38 one, or a Defender? I only ask because the Defender moulding is a fibreboard, and may be a bit more PVA-friendly. I've done 3 now (Defender ones), and find the zero open time of the Martrim / impact adhesives to be a PITA so am all ears re alternatives. Having said that, you still probably only want a one minute open time - PVA is probably way longer, unless you've found a clever formulation. PVA will also need pressure while drying to form the bond. My P38 is due soon so looking for decent alternatives.