Proleveling T Shape Spacers 100

I bought this leveling system to install travertine floors, and it turned into a nightmare, Mismatched and misaligned where tiles meet under the pummel, unable to level tile no matter how tight I drove the pummels would not lift the lower tile, ended up buying spacers at home depot and leveling with a level. 15 dollars total against 184.50 of this system...

I found it difficult to keep some tiles lined up straight. The twisting motion of tightening the cap has a tendency to shift the tiles out of position. Furthermore, since the cap covers the intersection of your tiles it's difficult to see this misalignment....