Piston port

[sunia]

should I cut away more of the cylinder skirt so that the piston ports are more open or do I leave it like this(I need to even it out a bit anyway) 
The window on the cylinder skirt was so tiny I only widened it I didn’t change the height but I just don’t know if it’d be smart to enlarge it more as I hear messing with the intake charge is something that can go wrong really quick.. t

[sunia]

Oops posted the pic 3 times it wasn’t showing up the first two 

[190mech]

If you look at the late case reed MX engines,none have windowed pistons..Thats from the cylinder reed days!If you look at the piston skirt location when the transfer ports are just opening,will give you a more accurate idea of your flow restriction..Case trenching helps direct the mixture to the transfer ducts and careful trimming of the cylinder skirt helps also..
49ccscoot.proboards.com/thread/10404/case-carter-porting-trench-cutting