I got a JS10 from e78. Strung it up at 27 lbs and grommets #5 & 6 on both sides instantly started sinking (see attached pic). I replaced those individual grommets with connected ones to no avail. I am in the US, and I understand that it's counter-productive to ship the racket back to Hong Kong for warranty claim. However I wanted to talk about e78 as a business. After contacting them several times, they completely IGNORED my issue. Not even a single acknowledgement. To be fair, out of dozens of rackets from e78 that I bought in the past, none had any issues and were all smooth sailing. I just would like to call out this one time. They are supposed to be a highly reputable shop, until issues arise... Take what you want away from this post. I just wanted to share my experience.