I have fond memories of my 038's, bought my first 61cc 038AV in 1980, the Super 67cc a few yrs later then the Magnum 72cc after that. When the 064 came out in 1986 I retired the 038 Magnum. They were basically both the same weight.... one 72cc, one 85cc. Then in the fall of '88 the 044 was born...