I spent the better part of $1000 on a sweet FT3035 for my 127mm triplet APO and it's the best focuser ever made bar NONE ! ,,,
lots of cash and a beautiful focuser but .....
;... Yes it needed a bit of adjustment out of the box , like anything mechanical you tune it to suit yourself , that's life .
Some people just need to moan ? it's not a perfect world .
Brian.