TX200 piston thump

No. You can use a lighter spring, delrin hat and guide rod, or other tuning tricks to change the shot cycle. These guns have been perfected over decades of production. If you can't get the shot cycle you desire, another model, or manufacturer might work better for you.

Also, enlarging the port will make the piston slam into the compression tube harder than designed. It will also reduce power, not increase it. All things to consider.