MG Marposs GO NO-GO Plug Gauge PI-034 P-0.050 16mm NP+0.050 B38233 PI-034 P-0.050 16mm NP+0.050 B38233. MG Marposs GO NO-GO Plug Gauge. We are not a giant corporate entity. We will make every attempt possible to resolve the issue if we made a mistake, (It happens). byJuly 4, 2026