Frankie
I Build and Run Ported Saws !
25degree angle is what works for me ... I take out the chip deflector and hold saw at an angle when cutting , biggest concern is to not draw noodles into the clutch cover and jam up the saw - just have to experiment to find what works best for you! I’m not sure if they have the 576xp at HL , Should be easy enough to look c ... I’ve never owned a 576xp though I heard they were a smoooth running saw ... Just a 395xp and a 572xp, both ported and am well pleased with both !