Hyway Stihl 039, MS390 Cylinder kit 49mm

So I was sent a cylinder kit which I put on the shelf till I could get to rebuilding the saw. I pulled it out of the box 2 months latter after my return window was up only to find out it was a Cross Performance kit. Now those kits are fine and all, but the reason I’m giving it 2 stars is because I very specifically wanted a Hyway piston kit, very specifically with Caber piston rings.