cultus ka head silver ka hota hai, heat up ho jay to face main farq aa jata hai, face baraber karwao, cylinder/piston ki position check karowao, miner sa b farq hua to crank ka kam b karwana pary ga karwana par gya to try karna crank 75 par set ho jay warna 100 par hi. or gasket double wala nai dalna genuine dalna, phr b mac double recommend kary to genuine 2 dal dana.