i definently agree it sounds like contact. check it out and retest...i bet theres a culprit somewhere..and i doubt its the blazers..im betting contact somewhere.

my rest was all set up..no clearance issuses..i shot feathers for a month or so but man i beat them up and knew hunting id beat them up worse. shot good. grouped good. but heard blazers shot just as good and were tough. so i had them refletched. first 35yd group i slammed 3 shafts together. i was in awe. this was my first year with a bow EVER. 35yds with feathers i shot OK but never THAT good. ever since i had major problems.....i keep breaking arrows!!! sliced fletchings off with BHs...cut a couple shafts with BHs...ya..i finally got smart enough to quit shooting more then 1 arrow..and granted..my form and shooting got better as well so i cant credit it ALL to the blazers...but just giving MY feather vs blazer test...both shot equally well. but i cant beat blazers up. heck i passed them through my bag target and they were fine..i love em!

check for contact and retest them...you might be surprised..