In addition, I always start a new quilt with a scrap of fabric on the side and test my tension there. Because it is on the edge I can easily flip that bit over to look closely at the underside. After that I just take the occasional look underneath and I always carefully inspect the back with each advance of the take up roller.[/quote]
Yes, I do the extra fabric on the side, also, to check it out when I start, but sometimes, that just doesn't seem to be enough space...if I'm having real tension problems.