HVR1+2 tests are pretty much useless to determine deep mtDNA subclades. You could order a full mtDNA sequence from FTDNA, but it's cheaper and usually just as good to purchase a 23andMe test (99$). I know a lot of people who got exactly the same deep clade results with 23andMe and with FTDNA's full mtDNA sequence. K1a subclades are well covered by 23andMe.