Hi, Joohn, looks at the best way to saver is to look at the cylinder, if that conception of the common cylinders that goes inwards, it is only aggravated pere, if it is Pplano and it has a kind of cross then it is curled, as the masda 323 possesses and other models or as the sub -arch Loyale Corona how vasting large, if the cylinder is normal, just have it eased with a bank or with what you have on hand, I to stop fighting with the caliper bought a press C, which is what the carpenters use to affirm the wood to the tables, here in Chile it cost me 2500 Chilean pesos around 4 dollars saves a lot and Nienes to make strength or break your fingers, try nothing.