It's another bra question! Straps!

[PresidentTwonk]

I have read the bra intervention blog which was very helpful but I have a problem not covered there and can't find the answer anywhere! My bra straps keep twisting randomly and it hurts/is uncomfortable and obviously not always convenient to rectify! Does anyone know how to fix this? Are they 'set' too long? Too short? Any suggestions welcome :)

Where are they twisting? And have you checked your size overall?

I have measured and rechecked and I'm wearing the right size. The bras are very comfortable but on three of them (out of about 20-25) the straps twist in one area, sometimes the front, sometimes the back. I have checked the plasticy bit on the strap is at the same point as the bras that don't do it but I assume that bras have different length straps so not sure that helps IYSWIM. I'm just not sure how to rectify it except maybe just throwing them away :D