It isn't the filter, it is the cylinder which is out of shape. Thin s/steel with a seam weld not going to get a perfect round shape. For the price they are OK, you live with it, before long you won't even be using the top screen, even the overflow pipe will probably get the Tijuana.
Sparging slowly reduces the risk of channeling and increases efficiency it reduces washing tannins into the wort too. A sparge should take around an hour or more depending on the volume of sparge water. One of the reasons I 'no sparge'
The increments on the side are allowing for 2 litres dead space. If I mash into 32 litres I fill up to the 30 litre mark. I like to keep everything as simple as possible. No O/P no sparge, too many people make to much fuss over efficiency. It isn't about getting the highest number possible it's...
Thebottom screen is the right way round, that is the lock in screen, different to the early models. The length of the O/P could be the same size fits all, 40 to 70 litre. If you don't lose 3 litres in the boil you are not boiling hard enough. Read O'Rourkes artical, 'the reason for the boil'
There is strength in unity. If all the Irish north and south are in agreeance thats fine. Splitting a small island nation does not make sense. Like saying Yorkshire or Lancashire wanted there own government. I just can't see any benefit.
Our bacon here is crap compared to British and American bacon. I think the brother of Peter Kay will eat his way into an early grave. Such a waste when you can drink your way into an early grave far cheaper.