Husqvarna 357xp -low compression on new cylinder

[cuinrearview]

Is it true some of the after market cylinders when porting the chrome plating chips?
My 262xp cylinder I’m porting is oem. I’m thinking of connecting the transfers to the cylinder base area for more smoother flow. I have a choice of porting the piston too. cut a upside down u on the intake side. The skirt blocks the full opening on tdc in the top of the intake port.

At tdc the intake is done taking in...