which wheel for 325 and 3/8 chain. some grinder and chain literature say 1/8wheel for 325 and 3/16 wheel for 3/8 chain, some say 3/16 for both, most shops say they use 3/16 for both and every chain gets ground the same , no 10 segress for for full chiesel, and 30/ 60. whats right. Al