I may have encountered a weird bug of sorts with AI trains that use Searchlight Simulations engines. GEVOs can be heard running at full power(which is actually normal for AI traffic), SD70M-2s/ACEs are running at low idle constantly, and SD70M/MACs aren't making any sounds at all. I haven't heard what the Dash 8/9s are doing because I haven't seen any AI traffic that uses them. Is there something that can be changed to fix this problem?
*EDIT* The SD70M/MACs are actually running at low idle, but the trains I've seen them on usually have GEVOs grouped on with them, making the MACs almost impossible to hear.