I'm not sure about the radar button, though I know it does NOT light up like it is supposed to. For details, we will have to wait for an expert on that.
As for the DDMomiII as a Type=109, that is correct as it is. There is one group left in one of the files that has a MomiII incorrectly listed as a Type=3, which the Momi was a 2nd class DD, so to us, a DE, Type=3. The MomiII has a cut back deck, guns removed, to carry Daihatsu barges for amphibious assaults. Therefore, it is a Troop Transport of sorts, though we did not want it showing up willy-nilly with all of the others, hence the use of the Type=109, Rare Troop Transport... You will see them used a bit around the Solomons, and eventually around Borneo, the Aleutians, etc.