String wearing into limbs

[MPaul]

The bow in the above photos a purchased new in 2011 had it so far 6 years I shoot roughly 500 to 800 shots a week.

[MPaul]

I roll my own strings I use b-50 material I have played with different loop serving material. I have used everything from nylon to diamond back braid. I don't know if I should only use the soft nylon stuff I change my strings every year. I this point using longbow only so string don't touch limbs. Just wanted to know if any one else had ever had this happen.

[MPaul]

My theory is using tough braid on loop serving is what caused this damage. But would like other opinions.