The GMB 1/2 scale hard shell base case I ordered to try and fit the SA 3/4 electric guitar into arrived last night. Today I looked it over and you were right: the SX 3/4 scale Strat fit ok, except that the neck-side strap button interfered with the compartment box. So today I took measurements and used my Dremel Motor Tool to cut a 1" square notch in the compartment box, after scoring the cloth with an Xacto knife and pealing it back. Then I folded the cloth back over the notch. The guitar fit perfectly. It even snuggled up perfectly against the form-fitted curve in the bottom of the case. So this was a simple modification that worked perfectly. You might want to recommend it to other customers.