OK I installed my lvl 10 and got iy working great with middle spring 2 shims and the2 band carrier. Shot about 1 hopper of paint and developed a leak down the barrel. Figured the oring broke in so switched it to the next size down carrier. Still leaked...shot it about 5-6 times...quit...shot 5-6 more..started leaking down barrel again. So on and so forth. Do I need to drop another carrier size or maybe add or drop a shim?