Thanks for the reply pikewi. - But what do you mean by prefill? Is it a specific product like the other compounds or are you suggesting adding some other material into my gaps?
Right now I've been using the self-adhesive mesh tape on my seams. I've been forcing the mud through the mesh and on some seams it's pretty thick. Would I be better off putting a light skim coat over instead? I'd thought that I'd have a stronger seam if it was packed full.