the problem with many titanium quick release skewers is many have a skewer shaft ( drawbar ) that is closer to 4mm instead of 5mm
have a set of KCNC titanium skewers that have a 3.5 mm shaft
the old Control Tech bolt on titanium skewers were one of the best - they measure at 5mm … the old T Gear bolt on titanium skewers also have 5mm shafts